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Large-crowned Planted Ponderosa Pine Respond Well to Thinning

James Willis Barrett

出版	Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, 1972
URL	http://books.google.com.hk/books?id=L8MBGWXOiLcC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN