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Effects of Soil and Foliar Applications of Nitrogen Fertilizers on a 20-year-old Douglas-fir Stand
Richard E. Miller
Steven L. Wert
出版
Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
, 1979
URL
http://books.google.com.hk/books?id=ECpo8U9k5HwC&hl=&source=gbs_api
EBook
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