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Silvical Characteristics of Eastern White Pine (Pinus Strobus)
Robert W. WilsonWilliam Everett McQuilkin
出版Northeastern Forest Experiment Station, Forest Service, U.S. Department of Agriculture, 1963
URLhttp://books.google.com.hk/books?id=6O9wflzBTdsC&hl=&source=gbs_api
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