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Gerhard Gschwandtner
7
Libro
Guía de bolsillo para ser un gran vendedor
Gerhard Gschwandtner
McGraw-Hill, 2006
8
Book
The Psychology of Sales Success
Learn to Think Like Your Customer to Close Every Sale
Gerhard Gschwandtner
McGraw-Hill, 2007
7
Book
The Pocket Guide to Selling Greatness
Gerhard Gschwandtner
McGraw-Hill, 2006