Pigou, A. C. 1877-1959. The theory of unemployment / by A.C. Pigou. - London : Macmillan, 1933. - xxv, 319 p. : ill. ; 23 cm. LCCN: 33-027334 Subjects--Topical Terms: Unemployed.Labor and laboring classes.Wages. Dewey Class. No.: 331.137 PIG