Ordnance maintenance. : Sound locator M2.

Bibliographic Details
Corporate Author:	Sperry Gyroscope Company, inc
Format:	Book
Language:	English
Published:	[Washington, U.S. Govt. Print. Off], [publisher not identified] ; [1942]
Series:	War Department technical manual ; no. 9-1660.
Subjects:	Sound > Equipment and supplies. Directional hearing.

Description
Item Description:	Cover title.
Physical Description:	30 pages : illustrations, diagrams