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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) 1957. Clark, R.C.; Brown, N.R. The Canadian Entomologist 89: 404-409.

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