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Google圖書搜尋
Effects of Clover and Alfalfa
David Wield Robertson
Gunnar Sigesmund Klemmedson
Isaac Ernest Newsom
Marjorie W. Peterson
Richard Vincent Lott
William Parker Headden
George Warren Deming
Alvin Kezer
其他書名
A Comparison of Legume Culture with Fallow Culture
出版
Colorado Agricultural College, Colorado Experiment Station
, 1930
URL
http://books.google.com.hk/books?id=T7lQAQAAMAAJ&hl=&source=gbs_api