Asimov, Isaac, author
Foundation and earth
Doubleday, 1986
 Buku Teks
Press, Frank, author
Earth
W H Freeman , 1974
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Investigating the earth
Houghton Mifflin, 1967
 Buku Teks
Knapp, B.J., author
Earth and man
George Allen and Unwin, 1982
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Prothero, Donald R., author
Evolution of the earth
McGraw-Hill, 2010
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