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Sweet Potato Production in California

Arthur Howard HendricksonHarry Webster GraybillHerbert Logan BeltonJoseph Tooker RosaLeon O. BonnetP. Beveridge KennedyRalph Hawley TaylorRobert Willard HodgsonWilliam Wylie MackieGuy Lockhart PhilpJames Dewey Long

出版	University of California, College of Agriculture, Agricultural Experiment Station, 1925
URL	http://books.google.com.hk/books?id=vOlQAQAAMAAJ&hl=&source=gbs_api