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Buku Teks
Haupt, Arthur, author
Population Reference Bureau, 1998
Buku Referensi
Clinton, J. Jarrett
Family Health Care, 1979
Buku Teks
Petersen, William, author
Macmillan, 1961
Buku Teks
Petersen, William, author
Macmillan, 1969
Buku Teks