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- [4] CONE PRODUCTION OF BALSAM FIR DAMAGED BY BALSAM WOOLLY APHID FORESTRY CHRONICLE, 1975, 51 (03): : 105 - 107
- [5] SPREAD OF LEPTODONTIUM-VITICULOSOIDES (BRYOPSIDA) AFTER BALSAM WOOLLY APHID INFESTATION OF FRASER FIR BULLETIN OF THE TORREY BOTANICAL CLUB, 1980, 107 (01): : 7 - 8
- [6] EFFECT OF BALSAM WOOLLY APHID ON CONE AND SEED PRODUCTION BY BALSAM FIR FORESTRY CHRONICLE, 1976, 52 (05): : 237 - 239
- [7] RECOVERY OF YOUNG BALSAM FIR TREES DAMAGED BY BALSAM WOOLLY APHID FORESTRY CHRONICLE, 1976, 52 (03): : 143 - 144
- [8] IMPACT OF BALSAM WOOLLY APHID (HOMOPTERA-PHYLLOXERIDAE) ON CONES AND SEED PRODUCED BY INFESTED FRASER FIR CANADIAN ENTOMOLOGIST, 1973, 105 (05): : 673 - 680