Darby, Ray.
Conquering the deep sea frontier / by Ray and Patricia Darby. - New York : McKay, 1971. - 204 p. : ill.
Describes advances in underwater research and exploration made possible by recent technological developments.
74165082
Oceanography--Research.
Deep diving.
551.4
Conquering the deep sea frontier / by Ray and Patricia Darby. - New York : McKay, 1971. - 204 p. : ill.
Describes advances in underwater research and exploration made possible by recent technological developments.
74165082
Oceanography--Research.
Deep diving.
551.4