@book{3668,
	author = {Grammer, George},
	title = {A course in radio fundamentals},
	publisher = {American Radio Relay League},
	year = {[1972]},
	series = {The Radio amateur's library, publication no. 19},
	address = {Newington, Conn.},
	edition = {[5th ed.]},
	note = {Page 183 blank for "Notes."}
}