MS13956D, MILITARY STANDARD: PISTON, INTERNAL COMBUSTION ENGINE, 3-3/4 INCH X 3-3/4 INCH (21 APR 1982) [NO SUPERSEDING DOCUMENT]
MS13956D, MILITARY STANDARD: PISTON, INTERNAL COMBUSTION ENGINE, 3-3/4 INCH X 3-3/4 INCH (21 APR 1982) [NO SUPERSEDING DOCUMENT].