@book{4924,
	author = {Calvez,, Jean Yves, and Veloso,, Agostinho,},
	title = {O pensamento de Karl Marx I},
	publisher = {Tavares Martins,},
	year = {1975},
	series = {Filosofia e religião},
	address = {Porto},
	edition = {3<U+00AA> ed}
}