Napoleon Hill's Keys to Success: the 17 Principles of Person

A companion to the inspirational business book "Think and Grow Rich" offers an expansion of the principles outlined in the original volume, including mental exercises and self-analysis techniques.

Un insotitor al cartii de afaceri inspirationale ,,Think and Grow Grow" ofera o extindere a principiilor subliniate in volumul original, inclusiv exercitii mentale si tehnici de autoanaliza.