@book{30351,
	author = {Derski, Włodzimierz.},
	title = {Rock and soil mechanics /},
	publisher = {Elsevier ;},
	year = {c1989.},
	series = {Developments in geotechnical engineering ;},
	address = {New York :},
	note = {Rev. and enl. translation of: Mechanika skał i gruntów, t. 7 of Mechanika techniczna.}
}