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Response to Crop-tree Release by 7-year-old Stems of Red Maple Stump Sprouts and Northern Red Oak Advance Reproduction
George R. Trimble (Jr.)
出版Forest Service, U.S. Department of Agriculture, Northeastern Forest Experiment Station, 1974
URLhttp://books.google.com.hk/books?id=qKR8nGfjqs8C&hl=&source=gbs_api
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