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20-MM aircraft gun matériel M1 and M2.
"In addition to a description of the 20-mm aircraft gun matériel M1 and M2, this manual contains technical information required for the identification, use, and care of the matériel."
Date:
April 2, 1942
Creator:
United States. War Department.
System:
The UNT Digital Library
Cardiograph, portable.
A guide to the operation and maintenance of the portable electrocardiograph.
Date:
October 2, 1944
Creator:
United States. War Department.
System:
The UNT Digital Library
Construction of weather maps, charts and diagrams
"This supplement outlines in detail the methods for plotting of observation data, for entry of analysis, and for preparation of supplementary maps, charts, and diagrams for all Army Air Forces weather stations."
Date:
February 2, 1943
Creator:
United States. War Department.
System:
The UNT Digital Library