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Cover of The master key system in twenty-four parts with questionnaire and glossary

Master-Key system

By Charles F. Haanel,Ruth L. Miller,Donald Gordon Carty,Mauricio Chaves Mesén,Helmar Rudolph,Joe Vitale,Oliver Jesberger

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Publish Date

1919

Publisher

Inland Printery

Language

eng

Pages

202

Description:

The Master Key System is a personal development book by Charles F. Haanel that was published in 1912. Though originally a 24 week correspondence course, it was published in book form in 1917. Along with "The Science of Getting Rich", by Wallace D. Wattles, the Master Key System is the source of Rhonda Byrne's inspiration for the book and the film "The Secret" (2006).