Ordnance provision system. Ordnance catalog (ordnance provision system): Group C, Howitzer (pack), 75-mm, M1 and M1A1, and carriage, howitzer, 75-mm, M2A1, M3, M3A1, M3A2, and M3A3, major items, maintenance parts, and equipment required for maintenance of howitzer (pack), 75-mm, M1A1, mechanism, recoil, howitzer (pack), 75-mm, M1A2 and M1A4, and carriage, howitzer, 75-mm, M3A1 or M3A3, addendum; Dec. 23, 1942.

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