@book{19269,
	author = {HARDY, Reginald H. and LEIGHTON, Frederick W.},
	title = {Proceedings First Conference on Acoustic emission/microseismic activity in geologic structures and materials =},
	publisher = {Trans Tech,},
	year = {1977.},
	series = {Series on Rock and Soil Mechanics ;},
	address = {Aedermannsdorf :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=19269}
}