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Preemergent Herbicides for Preparing Ponderosa Pine Planting Sites in the Southwest
L. J. Heidmann
出版Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1970
URLhttp://books.google.com.hk/books?id=-rQiUZ6ZjsYC&hl=&source=gbs_api
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