Phelps, Orme w. <br/><br/>
Introduction to labour economics 
Orme W. Phelps 
 - 4th ed. 
 - New York  McGraw-Hill  c1967 
 - xvi,  555p. ; 23cm. 
<br/><br/><label>Dewey Class. No.: </label>331.0973  / PHE