The New Encyclopedia Britannica : volume 13
Encyclopedia Britannica, 1983
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Grolier family encyclopedia : volume 13
Grolier Incorporated, 1995
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The World book encyclopedia : volume 13
World Book, 1985
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The Encyclopedia Americana : the international reference work, volume 13
Americana Corporation, 1960
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The World book encyclopedia : volume 13, N-O
Field Enterprises Educational Corporation, 1963
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