Sport diving : the complete manual for skin and scuba divers /
Balder, A. P.
Sport diving : the complete manual for skin and scuba divers / A. P. Balder. - Revised and updated edition of 1968. - New York : Collier Books, 1978.
Includes bibliographical references and index.
0020280404
Skin diving.
Scuba diving.
Sport diving : the complete manual for skin and scuba divers / A. P. Balder. - Revised and updated edition of 1968. - New York : Collier Books, 1978.
Includes bibliographical references and index.
0020280404
Skin diving.
Scuba diving.
