TY - BOOK ED - United States. TI - Principles and applications of underwater sound AV - VM480 .U53 U1 - 623.8938 PY - 1968/// [i.e. 1969] CY - Washington PB - Dept. of the Navy, Headquarters Naval Material Command; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] KW - Sonar KW - Underwater acoustics N1 - "NAVMAT P-9674."; "Originally issued as Summary technical report of Division 6, NDRC, volume 7, Washington, D.C., 1946."; Bibliography: p. 281-285 ER -