--subdivisions Equipment and Supplies and stores under names of individual military services, e.g. United States. Army--Equipment; United States. Army--Supplies and stores; and subdivision Equipment and supplies under individual wars, e.g. World War, 1939-1945--Equipment and supplies
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Ordnance -- Models. : Do-it-yourself backyard rockets : make and launch rockets, missiles, cannons, and other projectiles / Instructables.com, edited by Mike Warren.
Ore-dressing. : Wills' mineral processing technology : an introduction to the practical aspects of ore treatment and mineral recovery / Barry A. Wills, James A. Finch. [O'Reilly electronic resource]