@book{209149,
	title = {Ulrich's international periodicals directory 1977-1978/},
	publisher = {R. R. Bowker, },
	year = {1977..},
	series = {A Classified guide to current peridicals, foreign and domestic.},
	address = {New Jersey :},
	edition = {7th ed.},
	note = {Including irregular serials & annuals.}
}