Discover the underwater world : the complete guide to the art and science of skin and SCUBA diving /
Erickson, Ralph D.
Discover the underwater world : the complete guide to the art and science of skin and SCUBA diving / by Ralph D. Erickson. - Santa Ana, Calif. : U.S. Divers, c1972. - [vii], 132 p. : ill. (some col.), charts ; 26 cm.
Skin diving.
Scuba diving.
797.2
Discover the underwater world : the complete guide to the art and science of skin and SCUBA diving / by Ralph D. Erickson. - Santa Ana, Calif. : U.S. Divers, c1972. - [vii], 132 p. : ill. (some col.), charts ; 26 cm.
Skin diving.
Scuba diving.
797.2
