Northrup, Herbert Roof, 1918- <br/><br/>
Economics of labour relations 
 Economics of labor and industrial relations 

 - 7th ed. 
 - Homewood, Ill.,  R. D. Irwin  1973 
 - xviii, 771 p. illus. 
<br/><br/> First published in 1950 under title: Economics of labor and industrial relations. -Includes bibliographies. 
<br/><br/><label>ISBN: </label>0256013888 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LABOUR--ECONOMICS<br/>LABOUR<br/>INDUSTRIAL RELATIONS--UNITED STATES
<br/><br/><label>LC Class. No.: </label>HD 4901 Blo