Lathrop, Thomas G., author
Wadsworth, 1965
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staff of Research and Education Association, Max Fogiel, director
California Research and Education Association, 1987
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Rich, Barnett, author
McGraw-Hill, 1963
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Bowser, Edward A., author
D. Van Nostrand, 1893
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Thomson, J.E.
D Van Nostrand Co., 1962
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