edited by Frank N. Magill ; consulting editor, Martha Riherd Weller
Salem Press, 1993
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Comite National Francais De Geologie
Paris : Louis Jean, 1994,
Buku Referensi
Peason, Karl, author
Meridian Books, 1957
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Needham, Joseph, author
Cambridge University Press, 1996
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Ladyman, James, author
Routledge, 2002
Buku Teks