Encyclopedia of knowledge : volume 9
Grolier Incorporated, 1991
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The Encyclopedia Americana : volume 9
Americana Corporation, 1977
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The Encyclopedia Americana : volume 9
Americana Corporation, 1964
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Collier's encyclopedia; Volume 9
Macmillan, 1990
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Grolier family encyclopedia : volume 9
Grolier Incorporated, 1995
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