Russell, Sir E. John
George Allen and Unwin, 1961
Buku Teks
The Population Council, 1970
Buku Teks
Malthus, Thomas Robert
J. M. Dent & Sons, 1952
Buku Teks
edited by D.V. Glass and D.E.C. Eversley
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Buku Teks
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Majalah, Jurnal, Buletin