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♦ ¹Negron, Jose F. 1995. Cone and Seed Insects Associated with Piñon Pine. In: Shaw, Douglas W.; Aldon, Earl F.; LoSapio, Carol, technical coordinators. Desired future conditions for piñon- juniper ecosystems: Proceedings of the symposium; 1994 August 8-12; Flagstaff, AZ. Gen. Tech. Rep. RM-258. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 97-106.
♦ ²Black Turpentine Beetle, Dendroctonus terebrans (Olivier) (Insecta: Coleoptera: Curculionidae: Scolytinae), Albert E. Mayfield III, Jiri Hulcr, and John L. Foltz, University of Florida