Kuhn, Herbert
On the track of prehistoric man
Random House, 1955
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Scheele, William E.
Prehistoric man and the primates
World Publishing, 1957
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Braidwood, Robert J.
Prehistoric men
Chicago Natural History Museum, 1951
 Buku Teks SO
Braidwood, Robert J.
Prehistoric men
Natural History Museum, 1963
 Buku Teks SO
Edel, May
The story of our ancestors
Little, Brown, 1955
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