Here you can find some information and training resources for South Africa to buy or download. 
The three books above were co-written by Ronald Dell Davis, the originator of the Davis methods. 
If you click on a book, you will be taken to a page with a number of options for purchasing the book.
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  167k v. 1 Sep 2, 2015, 7:09 AM Axel Gudmundsson
Subpages (1): Sample Presentation