New revised edition! This enlarged book presents material on the physics and mathematics of diving, information on equipment, and sections on medical examinations. This CNCA guidebook is an excellent informative look at the science of scuba and its techniques and outlooks circa 1970, with much informative and smartly written information.

Condition Info: Reading copy. May have signs of wear and previous use (scuffs, library copy, highlighting, writing and underlining). Dust jacket may be missing. 100% GUARANTEE! Shipped with delivery confirmation, if you're not satisfied with purchase, please return item for full refund.