Stewart, C. 1991. Evaluation of Douglas-fir seed mortality on the Clearwater National Forest, Idaho. Pages 165-170 In D.M. Baugartner and James E. Lotan (eds.), Interior Douglasfir: the species and its management: Symposium proceedings, February 27 - March 1, 1990, Spokane, WA. Washington State University, Pullman, WA.