TY - BOOK ED - United States. TI - ... Handbook of artillery, including mobile, anti-aircraft and trench materiel: Prepared in the Office of the Chief of Ordnance. July, 1921. Revised May, 1924 AV - UF563 .A15 1924 PY - 1925/// CY - Washington PB - Govt. Print. Off. KW - United States KW - Army KW - Ordnance and ordnance stores N1 - At head of title: Ordnance Department document no. 2033 ER -