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Google圖書搜尋
Sampling Ranges by the Line Interception Method
Roy Hyer Canfield
其他書名
Plant Cover, Composition, Density, Degree of Forage Use
出版
Southwestern Forest and Range Experiment Station
, 1942
URL
http://books.google.com.hk/books?id=MiCkvAEACAAJ&hl=&source=gbs_api