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The Effect of Green Manures and Crop Residues on Soil Reaction

George Milton ListIsaac Ernest NewsomLawrence Wood DurrellLlewellyn Alexander MoorhouseWalter George SackettWilliam Parker HeaddenErwin Louis LeClergFloyd CrossJohn B. HutsonRaymond Terry Burdick

出版	Colorado Experiment Station, 1927
URL	http://books.google.com.hk/books?id=VbpQAQAAMAAJ&hl=&source=gbs_api