Lester, Richard Allen. Economics of labor / by Richard A. Lester . - 2nd ed. - New York : The Macmillan company, 1964 - xiv, 626 p : incl. tables, diagrs ; 24 cm. Bibliographical foot-notes. Subjects--Topical Terms: Working class.Economic history--1918- Dewey Class. No.: 331 / LEE 1964