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Plant Succession on a Cut Over, Burned, and Grazed Douglas Fir Area

Elbert Hann ReidLeo Anthony IsaacGerald Duane Pickford

出版	Pacific Northwest Forest and Range Experiment Station, 1938
URL	http://books.google.com.hk/books?id=SvEOtwAACAAJ&hl=&source=gbs_api