The NAUI textbook. [electronic resource] . — 8th ed.. — Montclair, CA : : National Association of Underwater Instructors,, 1992, c1990.. — 188 p. : : ill. ; 27 cm.
"For entry level Scuba Diver and Openwater I Scuba Diver training courses"--Cover. Includes index.
0916974537 9780916974534
Scuba diving. Scuba diving--Equipment and supplies. Scuba diving--Safety measures.