Ordnance provision system. Ordnance catalog [(ordnance provision system)]: Groups A-R. F-237. Tables, graphical firing, M2, M3, M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M15, M16, M17, M18, M19, and M20, addendum; Apr. 6, 1943.