Smith, R. H., B. E. Wickman, R. C. Hall, C. J. DeMars, and G. T. Ferrell. 1981. The California pine risk-rating system: its development, use and relationship to other systems. Pages 53-69 in R. L. Heddin, S. J. Barras, and J. E. Coster, Hazard-rating systems in forest insect pest management symposium proceedings. United States Department of Agriculture, Forest Service, General Technical Report WO-27. 169 p.
Smith et al. 1981
Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
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