Principles of agricultural engineering

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• Principles of agricultural engineering
  由: Michael A M, Ojha T P
  出版: (1966)
• Principles of agricultural engineering
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• PRINCIPLES OF AGRICULTURAL ENGINEERING
  由: MICHAEL A.M. and OJHA T.P
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• Principles of agricultural engineering
  由: Michael, A
  出版: (1966)
• Principles of agricultural engineering
  由: Michael, A M