R. G. Hollingsworth HOLLINGSWORTH, R. G., & HAIN, F. P. (1994). BALSAM WOOLLY ADELGID (HOMOPTERA, ADELGIDAE) - EFFECTS ON GROWTH AND ABNORMAL WOOD PRODUCTION IN FRASER FIR SEEDLINGS AS INFLUENCED BY SEEDLING GENETICS, INSECT SOURCE, AND SOIL SOURCE. CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, 24(11), 2284–2294. https://doi.org/10.1139/x94-293 HOLLINGSWORTH, R. G., & HAIN, F. P. (1994, November). EFFECT OF DROUGHT STRESS AND INFESTATION BY THE BALSAM WOOLLY ADELGID (HOMOPTERA, ADELGIDAE) ON ABNORMAL WOOD PRODUCTION IN FRASER FIR. CANADIAN JOURNAL OF FOREST RESEARCH-REVUE CANADIENNE DE RECHERCHE FORESTIERE, Vol. 24, pp. 2295–2297. https://doi.org/10.1139/x94-294 HOLLINGSWORTH, R. G., & HAIN, F. P. (1992). BALSAM WOOLLY ADELGID (HOMOPTERA, ADELGIDAE) EFFECTS ON WOOD AND BARK STRUCTURE OF FRASER FIR AND SILVER FIR. ENVIRONMENTAL ENTOMOLOGY, 21(5), 1103–1109. https://doi.org/10.1093/ee/21.5.1103 HOLLINGSWORTH, R. G., & HAIN, F. P. (1991). BALSAM WOOLLY ADELGID (HOMOPTERA, ADELGIDAE) AND SPRUCE-FIR DECLINE IN THE SOUTHERN APPALACHIANS - ASSESSING PEST RELEVANCE IN A DAMAGED ECOSYSTEM. FLORIDA ENTOMOLOGIST, 74(2), 179–187. https://doi.org/10.2307/3495294 Hollingsworth, R. G., Blum, U., & Hain, F. P. (1991). The effect of adelgid-altered wood on sapwood conductance of Fraser fir Christmas trees. IAWA Journal, 12(3), 235.