Briggs, David J., author
Agriculture and environment: the physical geography of temperature agriculture systems
Longman Scientific & Technical, 1994
 Buku Teks
Herren, Ray V.
Introduction to biotechnology : an agricultural revolution
Delmar Learning , 2013
 Buku Teks
Norton, George W., author
Introduction to economics of agricultural development
McGraw-Hill, 1993
 Buku Teks
Fuson, Robert H.
Introduction to world geography : regions and cultures / Robert H. Fuson
Kendall/Hunt Publishing Co., 1977
 Buku Teks
Knox, Paul, author
The geography of the world economy : an introduction to economic geography
Edward Arnold , 1994
 Buku Teks
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