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Google圖書搜尋
Factors Affecting the Cost of Tractor Logging in the California Pine Region
Arthur William Farrall
Edwin Coblentz Voorhies
Frank Wisdom Allen
Harry Ernest Jacob
Henry Herman Paul Severin
Myron Edward Krueger
William Wylie Mackie
James Dewey Long
出版
Agricultural Experiment Station
, 1929
URL
http://books.google.com.hk/books?id=csxQAQAAMAAJ&hl=&source=gbs_api