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Ground Preparation Costs and First Year Survival of Planted Red Pine in Southwestern Wisconsin

Lake States Forest Experiment Station (Saint Paul, Minn.)Joseph H. Stoeckeler

出版	Lake States Forest Experiment Station, U.S. Forest Service, 1963
URL	http://books.google.com.hk/books?id=JVG6MQEACAAJ&hl=&source=gbs_api