Mining : Natural Resources Development
Artikel Jurnal
Natural resources and international development
edited by Marion Clawson
John Hopkins Press, 1965
Buku Teks
Kreps, Juanita M.
Our natural resources their development and use
Wilson, 1955
Buku Teks SO
Twitchell, K.S.
Saudi Arabia, with an account of the development of its natural resources
Princeton University Press, 1953
Buku Teks SO
Twitchell, K.S.
Saudi Arabia : with an account of the development of its natural resources
Princeton University, 1958
Buku Teks SO