1. A. Loudon, New Scientist
18(3), 708 (1972).
2. G. L. Crouch, Spring-Season Deer Browsing of Douglas-Fir on the Capitol Forest in Western Washington, Pacific Northwest Forest and Range Experiment Station, Forest Service Research Notes, PNW-84 (August, 1968), p. 1.
3. G. L. Crouch and N. R. Paulson, Effects of Protection from Deer on Survival and Growth of Douglas-Fir Seedlings, Pacific Northwest Forest and Range Experiment Station, Forest Service Research Notes, PNW-94 (November, 1968), p. 1.
4. R. M. Anthony, Protecting Ponderosa Pine from Mule Deer and Plastic Tubes, Tree Plant’s Notes (Summer, 1982), p. 22.
5. G. L. Crouch and M. A. Radwan, Effects of Nitrogen and Phosphorous Fertilizers on Deer Browsing and Growth of Young Douglas-Fir, Pacific Northwest Forest and Range Experiment Station, Forest Service Research Notes, PNW-368 (January, 1981), p. 1.