The progress of underdeveloped areas
edited by Bert F. Hoselitz
University of Chicago Press, 1952
 Buku Teks SO
The progress of underdeveloped areas
edited by Bert F. Hoselitz
University of Chicago Press, 1952
 Buku Teks
Ormeling, Ferdinand Jan
The Timor problem: a geographical interpretation of an underdeveloped island
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1955
 UI - Disertasi Membership
Mason, Edward S.
Economic planning in underdeveloped areas : government and business
Fordham University Press, 1958
 Buku Teks SO
Wolf, Charles
Capital formation & ; foreign investment in underdeveloped areas : an analysis of research needs and program possibilities prepared from a study supported by the Ford Foundation
Syracuse University Press, 1958
 Buku Teks