@book{175461,
	author = {Mach, Bogdan W. and Wesołowski, Włodzimierz.},
	title = {Social mobility and social structure},
	publisher = {Routledge & Kegan Paul in association with Methuen},
	year = {1986.},
	series = {International library of sociology},
	address = {London},
	note = {Includes index.}
}