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Fertilizers for Western Washington

Silvere Cyril VandecaveyeHarold E. DregneKarl Emil BaurChester Druse SchwartzeDavid Frederick AllmendingerD. J. CrowleyState College of Washington. Poultry Council

出版	Extension Service, Institute of Agricultural Sciences, the State College Washington, 1949
URL	http://books.google.com.hk/books?id=zMA0PwAACAAJ&hl=&source=gbs_api