Bello, Walden F., author
Institute for Food and Development Policy, 1982
Buku Teks
Kahn, Herman, author
Morrow Quill Paperbacks, 1979
Buku Teks
Afsghar, Haleh, author
Longman, 1991
Buku Teks
edited by P. Ebow Bondzi-Simpson
Praeger, 1992
Buku Teks
Kahn, Herman
Morrow Quill Paperback, 1979
Buku Teks