Curry, Steve, author
St. Martin's Press , 1993
Buku Teks
United Nations , 1987
Buku Teks
edited by Arnold Pacey for Oxfam and the Ross Institute of Tropical Hygiene
John Wiley & Sons, 1978
Buku Teks
King, Felicity Savage, author
Oxford University Press, 1995
Buku Teks
edited by Abdel R. Omran ; participating Advisory Board, John C. Cassel ... [and others]
Springer, 1974
Buku Teks