Sharma, I.C.
Neb. Johnsen , 1965
Buku Teks
Sharma, I.C.
Johsen Publishing Company, 1965
Buku Teks
Garn, Stanley M.
Charles C. Thomas, 1971
Buku Teks
Raup, David M.
W.H. Freeman and Co., 1978
Buku Teks
Demmer, Ulrich, author
Oxford University Press, 2016
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