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Google圖書搜尋
History and Accomplishments of the Penn State Fruit Research Laboratory at Biglerville, 1918-1976
Pennsylvania State University. Agricultural Experiment Station
出版
Pennsylvania State University, College of Agriculture, Agricultural Experiment Station
, 1981
URL
http://books.google.com.hk/books?id=06M2zgEACAAJ&hl=&source=gbs_api