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Maturity Standards for Harvesting Bartlett Pears for Eastern Shipment
Arthur William Farrall
Edwin Coblentz Voorhies
Frank Wisdom Allen
Harry Richard Wellman
Henry Herman Paul Severin
Sherwood William Shear
Walter Wallace Weir
William Wylie Mackie
出版
Agricultural Experiment Station
, 1928
URL
http://books.google.com.hk/books?id=c_YFUW6CzEAC&hl=&source=gbs_api