Home / Authors / G Gumm; Dr. Barry D

Books by G Gumm; Dr. Barry D

All books by this author

1 books found
The Mathematically Correct Wave / Rhythm Model: Increase your Targeting to over 95% by Dr. Barry D,G Gumm (2014-02-14)
The Mathematically Correct Wave / Rhythm Model: Increase yo…
By: G Gumm; Dr. Barry D
View Details