Insect control guide for commercial christmas trees
By: J. T. Pennell.
Series: Washington (State) State University. Extension Service. Extension bulletin -- 649.; Extension bulletin (Washington State University. Cooperative Extension Service) -- 649.
Publisher: Cooperative Extension Service, College of Agriculture, Washington State University
Published: 1973
Place of publication: Pullman
Language: eng
Subjects: Christmas tree industry; Insect pests -- Control