00760cam a22002531 4500 map47000380 DLC 20260227111555.0 800222s1945 dcuab f001 0 eng map47000380 (OCoLC)6013404 DLC CoG DLC premarc UG470 .U5 no. 425 United States. Army Map Service. Grids and magnetic declinations ... [Washington, 1945] 89 p. illus., fold. maps. 27 cm. Its A.M.S. memorandum no. 425 "Amendment no. 1" ([2] p.) inserted. Military maps. Geomagnetism. United States. Army Map Service. Memorandum ; no. 425. 4th ed. 37784 37784