Claiborne, Robert
The birth of writing
Time-Life Books, 1974
Buku Teks SO
SEXUALITY AND BIRTH
Buku Teks
Simons, Gerald
The birth of Europe
Time-Life Internationa, 1968
Buku Teks SO
Claiborne, Robert
The birth of writing
Time-Life Books, 1974
Buku Teks SO
Sheps, Mindel C.
Mathematical models of conception and birth
Chicago Press, 1973
Buku Teks SO