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- [3] Role of resin acids in ponderosa pine Pinus ponderosa laws resistance to Neodiprion fulviceps Cresson (Hymenoptera: Diprionidae) PHYSIOLOGY AND GENETICS OF TREE-PHYTOPHAGE INTERACTIONS - INTERNATIONAL SYMPOSIUM, 1999, (90): : 221 - 229
- [5] CHEMOSYSTEMATIC STUDIES IN THE GENUS PINUS .7. THE LEAF OIL TERPENE COMPOSITION OF PONDEROSA PINE, PINUS-PONDEROSA CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE, 1992, 70 (02): : 374 - 378