TY - BOOK AU - Graver,Dennis TI - Scuba diving SN - 0873224310 : AV - GV840.S78 G675 1993 U1 - 797.2/3 20 PY - 1993/// CY - Champaign, IL PB - Human Kinetics Publishers KW - Scuba diving N1 - Includes bibliographical references (p. 206-207) and index ER -