Underwater sound equipment
Series: Summary technical report of Division 6, NDRC -- volume 14-19
Published: 1946
Language: eng
Subjects: Sonar; Instruments; Underwater acoustics; Naval research
Other titles: Summary technical report of the National Defense Research Committee; Sonar listening systems; Sonar echo-ranging systems; Scanning sonar systems; FM sonar systems; Sonar instruments; Sonar countermeasures
Notes: Title on half-title page: Summary technical report of the National Defense Research Committee.

"Manuscript and illustrations for this volume were prepared for publication by the Summary Reports Group of the Columbia University Division of War Research under contract OEMsr-1131 with the Office of Scientific Research and Development. This volume was printed and bound by the Columbia University Press"--Unnumbered page ii.

LC Science, Business & Technology copy no. 171 (volume 1), 239 (volume 2), 3 (volume 3), 196 (volume 4), 64 (volume 5), 71 (volume 6).

In a set of declassified documents held as a collection by the Library of Congress.

Includes bibliographical references and indexes.
Table of contents: title: I. Listening systems; title: II. Echo-ranging systems; title: III. Scanning sonar systems; title: IV. Frequency-modulated sonar systems; title: V. Instruments, attack aids and miscellaneous ordnance; title: VI. Countermeasures.