Aspen: Guide to Common Problems in Colorado
by D. Leatherman, H. McNulty, M. Schomaker and D. Lynch, Colorado State University Extension, 559A, 1996, 8 1/2 x 11, paper back, 36 pages.
Colorado Commercial Pesticide Application and Safety Training Guide: Rangeland Pest Control
edited by H. Skiba and S. McDonald, Colorado State University Extension, CE107, 2009, 8 1/2 x 11 spiral bound, 216 pages
Insects and Diseases on Woody Plants in the Central Rockies
by W. Cranshaw, Colorado State University Extension; D. Leatherman, B. Jacobi, and L. Mannix, Colorado State University Bulletin no. 506A, 2000, 8 1/2 x 11 paper bound, 300 pages ISBN.1-889143-04-9
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