Effects of defoliation, girdling, and severing of sugar maple trees on root starch and sugar levels /
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Format: | Government Document Book |
Language: | English |
Published: |
Upper Darby, Pa. :
U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station,
1974
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Series: | USDA Forest Service research paper NE ; 306
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Subjects: |