Ordnance provision system. [Ordnance catalog (ordnance provision system): Group C, Howitzer, 155-mm, M1, and carriage, howitzer, 155-mm, M1, major items, maintenance parts, and equipment required for maintenance of howitzer, 155-mm, M1, mechanism, recoil, howitzer, 155-mm, M6, and carriage, howitzer, 155-mm, M1, addendum; Jan. 9, 1943.

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