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Farm machinery
が好きなら
Claude Culpin
次に読む本はこちら
Principles of farm machinery
Robert Allen Kepner
[William Wheeler Hubbell, authorized to apply for patents.]
United States. Congress. Senate. Committee on Patents
Farm power and machinery management
Donnell Hunt
Tremendous Tractors (Amazing Machines)
Tony Mitton
Handy farm devices and how to make them
Rolfe Cobleigh
Agricultural process engineering
S. M. Henderson