Robert Rosaler, editor
McGraw-Hill, 2002
Buku Referensi
Rosaler, Robert C.
McGraw-Hill, 1995
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Westcott, Cynthia, author
D. Van Nostrand, 1955
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Andrew A. Fisher ...[et al.]
The Population Council, 1998
Buku Teks
Andrew A. Fisher, John E. Laing, John E. Stoeckel, John W. Townsend
Population Council, 1998
Buku Referensi