Shea, P., M. Harverty, and G. Daterman. 1986. Impact of insects and methodology for monitoring insects in western pine seed orchards. Pages 147-155 In A. Roques, Proceedings of the 2nd Conference of the Cone and Seed Insects Working Party S2.07-01, September 3-5, 1986, Briancon, France. Station de Zoologie Forestière, Olivet, France.