@book{92390,
	author = {United States.},
	title = {Service handbook of the 9.2-inch howitzer matériel, model of 1917 (Vickers mark I) and 9.2-inch howitzer matériel, model of 1918 (Vickers mark II)},
	publisher = {Govt. print. off.,},
	year = {1923.},
	address = {Washington,},
	note = {On verso of t.-p.: War department.  Document no. 1098. The adjutant general's office.}
}