@book{18726,
	author = {LEGGET, Robert F.},
	title = {Geology and engineering.},
	publisher = {Mc Graw-Hill,},
	year = {cop.1962.},
	series = {International Series in the Earth Sciences},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=18726}
}