Ecological indexes as a means of evaluating climate, species distribution, and primary production

Emmingham, W. H. 1982. Ecological indexes as a means of evaluating climate, species distribution, and primary production. In: Edmonds, Robert L., ed. Analysis of coniferous forest ecosystems in the western United States. US/IBP Synthesis Series 14. Stroudsburg, PA: Hutchinson Ross Publishing Company: Chapter 3.