The Master Key System
The Master Key System is a personal development book that was originally published as a correspondence course in 1912. 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."
- Paperback | 160 pages
- 137.16 x 208.28 x 30.48mm | 498.95g
- 25 Nov 2010
- Soho Books
- Illustrations, black and white