@book{86980,
	author = {Konstantinov, Fedor Vasilevich. and Roces, Wenceslao, },
	title = {El materialismo histórico / },
	publisher = {Grijalbo, },
	year = {[1978]},
	series = {Instrumentos},
	address = {[Barcelona] : },
	edition = {[1ª ed.].}
}