Metcalf, John E., author
The agricultural economy of Indonesia
U.S. Department of Agriculture , 1952
 Buku Teks
Agricultural sciences abstract
Research Institute Of Udayana University, 1997
 Buku Referensi
Handbook of agricultural meteorology
edited by John F. Griffith
Oxford University Press, 1994
 Buku Referensi
Abstracts on Tropical Agricultural
Koninlijk Institut voor de Tropen, 1992,
 Majalah, Jurnal, Buletin
Norton, George W., author
Introduction to economics of agricultural development
McGraw-Hill, 1993
 Buku Teks
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