Hague, Hawden
Executive self-development real learning in real situations
Macmillan, 1974
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Bittel, Lester Robert
Executive skills program self-assessment tests
Alexander Hamilton Institute, 1986
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Executive skills program checkpoint comprehention reviews Alexander Hamilton Institute
N.Y. AHI , 19-
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Selk, Jason
Executive toughness : the mental-training program to increase your leadership performance
McGraw-Hill, 2012
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Mason, Joseph G.
How to be a more creative executive
McGraw-Hill, 1960
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