Burtchett, Floyd Franklin
Clifford Milton, 1964
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Drucker, Peter Ferdinand, 1909-2005, author
The New American Library, 1964
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Hoagland, Henry E.
McGraw-Hill Book Company, Inc., 1947
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Maurer, Herrymon, author
Macmillan, 1956
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Holden, Paul E., author
McGraw-Hill, 1951
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