Underwater safety including curriculum for sport diving training program /
Cross, E. R.
Underwater safety including curriculum for sport diving training program / E. R. Cross. - Los Angeles, Calif. : Hearthways, 1956. - 88 p. ; 22 cm.
Incluye bibliografia.
GV840 / .S78 C76
Underwater safety including curriculum for sport diving training program / E. R. Cross. - Los Angeles, Calif. : Hearthways, 1956. - 88 p. ; 22 cm.
Incluye bibliografia.
GV840 / .S78 C76