The more important shade tree insects of eastern Canada and their control
By: by J.M. Swaine and C.B. Hutchings
Contributors: Hutchings, C.B.; Dominion of Canada. Department of Agriculture
Series: Bulletin (Dept. of Agriculture) -- No. 63 - new series
Publisher: Minister of Agriculture
Place of publication: Ottawa
Language: und
Number of pages: 58
Subjects: Control; Insect pests; Biological control; Shade trees