@book{16121,
	author = {RRBNJ},
	title = {ULRICH'S international periodicals directory 1997},
	publisher = {R. R. Bowker,},
	year = {1996},
	address = {New Jersey,USA:},
	edition = {35th},
	note = {P. copy of the selected portions of the different volumes of the ULRICH'S directory}
}