The Cleveland Boomerang School - - - The big small stick book.
Based on a 10 year market research program at the Cuyahoga Valley National Recreation Area, including national tournaments, 100's of programs, and 1,000's of students.
The complete guide to the most misunderstood flying device in human history. New 2nd edition includes additional information and modern day examples of the physics of HOW and WHY Boomerangs fly.