Turnovsky, Stephen J., author
MIT Press, 2000
Buku Teks
Benavie, Arthur, author
Prentice-Hall, 1972
Buku Teks
Korean Overseas Information Service, 1972
Buku Teks
Henderson, Julian, author
Food and Agriculture Organization of the United Nations, 1970
Buku Teks
Henderson, Julian, author
Food and Agriculture organization of the UN, 1970
Buku Teks