Salo, David John, 1940-; Ringo, John A.; Nishitani, James H.; Walker, Richard B.; U.S. International Biological Program. Coniferous Forest Biome; University of Washington; Amundsen, Craig L.(Seattle : University of Washington, 1972)
Lassoie, J. P.; Salo, David John, 1940-; Leverenz, J. W.; Scott, David R. M.; Walker, Richard B.; U.S. International Biological Program. Coniferous Forest Biome; University of Washington(Seattle : University of Washington, 1972)
