Common woolly aphids of conifers in British Columbia
By: R.W. Duncan. --
Contributors: Pacific Forestry Centre.; Canadian Forestry Service.
Edition: Rev.
Series: Pest leaflet / Pacific Forestry Centre -- FPL-19; Forest pest leaflet --  no. 19
Publisher: Government of Canada, Canadian Forestry Service,Pacific Forestry Centre
Published: 1986
Place of publication: Victoria, B.C
Language: eng
Subjects: Aphids
Notes: Caption title.

Includes bibliographical references (p. 8).