@book{92391,
	author = {United States. and United States.},
	title = {Introduction to line radio communication ...},
	publisher = {Govt. Print. Off.,},
	year = {1923.},
	series = {Radio communication pamphlet},
	address = {Washington,},
	note = {On verso of t.-p.: War department. Document no. 1114. Office of the adjutant general.}
}