West African Rhythms for Drumset by Dan Thress, Abraham Adzenyah, is a book of great importance in the world of drum education.  It outlines rhythms native to Ghana and the application of these to the drum kit.  The book allows the student to understand traditional Ghana percussion rhythms and how these can be played with finesse and precision.  From West London Drum Tutor, Drum teacher in Harrow, London   http://paltip.com/westlondonenglish/!526q