Clark, R.C.
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The spruce budworm in Newfoundland: history, status, and control
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The Sawflies and Horntails of Newfoundland
Clark, R.C.; Clarke, L.C.; Pardy, K.E.
Year: 1974
Catalog ID: 6686
Issued by: Atlantic Forestry Centre
Availability: PDF (download)
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Collecting and Processing Forest Insect and Disease Survey Samples in Newfoundland
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Biological agents released in Newfoundland for the control of forest insect pests
Clark, R.C.; Otvos, I.S.; Pardy, K.E.
Year: 1973
Catalog ID: 6654
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Insects of Balsam Fir in Newfoundland
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Adelges piceae (Ratz.), balsam woolly aphid (Homoptera: Adelgidae)
Clark, R.C.; Greenbank, D.O.; Bryant, D.G.; Harris, J.W.E.
Year: 1971
Catalog ID: 28354
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
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The hemlock looper in Newfoundland: the outbreak, 1966 to 1971; and aerial spraying, 1968 and 1969
Otvos, I.S.; Clark, R.C.; Clarke, L.J.
Year: 1971
Catalog ID: 6626
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free), PDF (download)
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Studies of Adelges piceae (Ratz.) and its predators
Year: 1963
Catalog ID: 8151
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies on Adelges piceae (Ratz.) and its predators
Year: 1962
Catalog ID: 8152
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). XI. Cremifania nigrocellulata Cz. (Diptera: Chamaemyiidae), an introduced predator in eastern Canada
Year: 1962
Catalog ID: 7026
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). X. Field identification of Laricobius erichsonii Rosen. (Coleoptera: Derodontidae)
Year: 1962
Catalog ID: 7003
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1961
Catalog ID: 8159
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). IX. Pullus impexus (Muls.) (Coleoptera: Coccinellidae), an introduced predator in eastern Canada
Year: 1961
Catalog ID: 7025
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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A new record of Leptinillus validus (Horn) (Coleoptera: Leptinidae) in North America
Year: 1961
Catalog ID: 7019
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). VIII. Syrphidae (Diptera)
Year: 1960
Catalog ID: 20309
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1960
Catalog ID: 8158
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). VII. Laricobius rubidus Lec. (Coleoptera: Derodontidae), a predaotr of Pineus strobi (Htg.) (Homoptera: Adelgidae)
Year: 1960
Catalog ID: 7024
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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A method of adapting a microscope for observation of non-motile insects on tree trunks
Year: 1960
Catalog ID: 7023
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1959
Catalog ID: 8157
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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A field cage for rearing syrphid larvae and other predators of the balsam woolly aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae)
Year: 1959
Catalog ID: 7022
Issued by: Atlantic Forestry Centre
Availability: PDF (request by e-mail)
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). VI. Aphidecta obliterata (L.) (Coleoptera: Coccinellidae), an introduced predator in eastern Canada
Year: 1959
Catalog ID: 7002
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Adelges piceae (Ratz.) in Canada with reference to biological control
Balch, R.E.; Clark, R.C.; Brown, N.R.
Year: 1958
Catalog ID: 8440
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1958
Catalog ID: 8156
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). V. Laricobius erichsonii Rosen. (Coleoptera: Derodontidae), an introduced predator in eastern Canada
Year: 1958
Catalog ID: 7021
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1957
Catalog ID: 8155
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). III. Field identification and some notes on the biology of Neoleucopis pinicola Mall. (Diptera: Chamaemyiidae)
Year: 1957
Catalog ID: 7020
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). IV. Neoleucopis obscura (Hal.) (Diptera: Chamaemyiidae), an introduced predator in eastern Canada
Year: 1957
Catalog ID: 7001
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1956
Catalog ID: 8154
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).
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Studies of the predators of the balsam woolly aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae). II. An annotated list of the predators associated with the balsam woolly aphid in eastern Canada
Year: 1956
Catalog ID: 7000
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies of predators of the balsam woolly aphid Adelges piceae (Ratz.) (Homoptera: Adelgidae). I. Field identification of Neoleucopis obscura (Hal.), Leucopina americana (Mall.) and Cremifania nigrocellulata Cz. (Diptera, Chamaemyiidae)
Year: 1956
Catalog ID: 6999
Issued by: Atlantic Forestry Centre
Availability: Order paper copy (free)
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Studies on Adelges piceae (Ratz.) and its predators
Clark, R.C.; Brown, N.R.; Smith, B.C.
Year: 1955
Catalog ID: 8153
Issued by: Atlantic Forestry Centre
Availability: Not available through the CFS (click for more information).