Herren, Ray V.
Introduction to biotechnology : an agricultural revolution
Delmar Learning , 2013
 Buku Teks
Grigg, David, author
An introduction to agricultural geography
Routledge, 1995
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Norton, George W., author
Introduction to economics of agricultural development
McGraw-Hill, 1993
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Ross, Robert C., author
An introduction to agricultural economics
McGraw-Hill, 1951
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Thomson, Edgar
A introduction to agricultural economics / by Edgar Thomson
Thomson Nelson and Sons Ltd. , 1949
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