Martin, E. A. (Elizabeth A.)
MacMillan Press, 1985
Buku Referensi
Lawrence, Eleanor
John Wiley & Sons, 1989
Buku Teks
McGraw-Hill, 2003
Buku Referensi
McGraw-Hill dictionary of earth science
McGraw-Hill, 2003
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Singleton, Paul, author
John Wiley & Sons, 2001
Buku Referensi