Canadian Forest Service Publications
Spruce budworm, chemical and biological control. 1991. Ennis, T.J.; Caldwell, E.T. Pages 621-641 in L.P.S. van der Geest and H.H. Evenhuis, editors. Tortricid Pests, their Biology, Natural Enemies and Control. Elsevier Science Publishers, Amsterdam, The Netherlands.
Issued by: Great Lakes Forestry Centre
Catalog ID: 21674
Availability: PDF (request by e-mail)