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Weight, Nutrient Element and Productivity Studies of Seedlings and Saplings of Eight Tree Species in Natural Ecosystems

David Cregeen FrostEliot EpsteinErnest B. HarveyHarold E. YoungRichard F. DyerRobert Louis BlickleRobert Vincent Rourke

出版	Maine Agricultural Experiment Station, 1967
URL	http://books.google.com.hk/books?id=-6dQAQAAMAAJ&hl=&source=gbs_api