Messenger, William E.
Essentials of writing
Prentice-Hall, 1989
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Koontz, Harold
Essentials of management
McGraw-Hill, 1974
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Lahey, Benjamin B.
Essentials of psychology
McGraw-Hill, 2003
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Lahey, Benjamin B.
Essentials of psychology
2002
Multimedia
Schiller, Bradley R.
Essentials of economics
McGraw-Hill, Irwin, 2005
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