Ordnance provision system. Ordnance catalog (ordnance provision system): Groups A-T. F-237. Tables [firing], graphical. M2, M3, M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M15, M16, M17, Mis18, M19, and M20. organizational spare parts and equipment; June 26, 1943.

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