Calvert, Peter. The concept of class : an historical introduction / Peter Calvert. - New York : St. Martin's Press, 1982. - 254 p. ; 23 cm. Includes index. Bibliography: p. [217]-229. ISBN: 0312159188 : $22.50 LCCN: 82010617 Subjects--Topical Terms: Social classes. LC Class. No.: HT 609 / .C25 1982