MS13957D, MILITARY STANDARD: PISTON, INTERNAL COMBUSTION ENGINE, 3-7/16 INCH X 3-1/2 INCH (21 APR 1982) [NO SUPERSEDING DOCUMENT]
MS13957D, MILITARY STANDARD: PISTON, INTERNAL COMBUSTION ENGINE, 3-7/16 INCH X 3-1/2 INCH (21 APR 1982) [NO SUPERSEDING DOCUMENT].