@book{33840,
	author = {Trepczyński, Stanisław, and Sadowski, Michał,},
	title = {Socialism and national development /},
	publisher = {Interpress Publishers ;},
	year = {1971.},
	address = {Warsaw :},
	note = {At head of title: Stanisław Trepczyński and Michał Sadowski.}
}