@book{23822,
	author = {BEN-MENAHEM, Ari and SINGJ, Sarva Jit},
	title = {Seismic waves and sources /},
	year = {1981.},
	address = {New York,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=23822}
}