Ordnance maintenance.
Sound locator M2.

Description

Corporate Author

Sperry Gyroscope Company, inc.

Language(s)

English

Published

[Washington, D.C., U.S. Govt. print. off., 1940]

Subjects

Directional hearing.
Sound > Sound / Equipment and supplies.

Note

Cover-title.

Physical Description

vi, 30 p. illus., diagrs.

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