Collier's encyclopedia, with bibliography and index : volume 11
P.F. Collier & Son, 1954
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Weideman, Hugh
The rapid fact finder : a desk book of universal knowledge / compiled by Hugh Weideman
Thomas Y. Crowell Company, 1958
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Encyclopaedia Britannica : volume 11
Encyclopaedia Britannica Inc., 1967
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Encyclopaedia Britannica : volume 11
Encyclopaedia Britannica Inc., 1968
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Encyclopaedia universalis : volume 11
Encyclopaedia Universalis France S.A. , 1989
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