Johnson, N.E.
-
A new species of Camptomyia (Diptera: Cecidomyiidae) from Douglas-fir cones
Year: 1968
Catalog ID: 27866
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).
-
Douglas-fir cone insects and their control
-
Life history and habits of a midge, Contarinia washingtonensis Johnson (Diptera: Cecidomyiidae), in Douglas-fir cones
Year: 1963
Catalog ID: 23911
Issued by: Pacific Forestry Centre
Availability: Not available through the CFS (click for more information).