Afgan Fadilla
2019
UI - Tesis Membership
Unesco, 1979
Buku Teks
Dubhashi, P. R.
Sage Publications, 1986
Buku Teks
Manchester University Press, 1971
Buku Teks
by Noboru Hashizume ... [and others]
National Research Institute of Agricultural Economic, Ministry of Agriculture, Forestry and Fisheries , 2000
Buku Teks