Drucker, Peter Ferdinand, 1909-2005
Pan Books, 1982
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Drucker, Peter Ferdinand, 1909-2005
Harper & Row, 1945
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Clinard, Marshall B. (Marshall Barron)
Sage Publications, 1985
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Holden, Paul E.
McGraw-Hill, 1968
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Holden, Paul E.
McGraw-Hill, 1951
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