Barrow, Christopher J.
Water resources and agricultural development in the tropics
Essex Longman Scientific & Technical, 1987
Buku Teks
Mining : Natural Resources Development
Artikel Jurnal
Natural resources and international development
edited by Marion Clawson
John Hopkins Press, 1965
Buku Teks
Natural resources and development
Federal Republic of Germany, 1977
Buku Teks SO
Kreps, Juanita M.
Our natural resources their development and use
Wilson, 1955
Buku Teks SO