Hart, Robert A. Working time and employment / Robert A. Hart. - Boston : Allen & Unwin, 1987. - xx, 293 p. : ill. ; 23 cm. Includes index. Bibliography: p. 277-286. ISBN: 0043311091 (alk. paper) Subjects--Topical Terms: Hours of labor. Dewey Class. No.: 331.125 / HAW 1987