20-MM aircraft gun materiel M1 and M2
Title:
20-MM aircraft gun materiel M1 and M2
Author:
United States. War Department.
Corporate Author:
Publication Information:
[Washington] : [U.S. Govt. print. off.], 1942.
Physical Description:
45 pages : illustrations ; 22 cm.
General Note:
Cover title.
Language:
English
Subject Term:
Format :
Book