Underwater acoustics : proceedings of an institute sponsored by the Scientific Affairs Committee of the North Atlantic Treaty Organization and conducted by the Pennsylvania State University at the Imperial College of Science and Technology of the University of London, July 31-August 11, 1961 / V.M. Albers. Institute on Underwater Acoustics (1st : 1961 : London, England) Albers, Vernon Martin, 1902- Pennsylvania State University. Imperial College of Science and Technology. Underwater acoustics. QC225 .I53 1961 534.23 ALU Includes bibliographical references and index Pennsylvania State University; distributed by Plenum Press, New York. [1963] [1963] 1963 Text xiii, 354 p. : eng