Valk, Willem Lodewijk,  1900- <br/><br/>
The principles of wages, 
by Dr. Willem L. Valk. 
 - London,  P. S. King & Son, ltd.,  1928. 
 - xii, 139 p.  diagrs.  23 cm. 
<br/><br/>Bibliography: p. 137-139. 
<br/><br/><label>LCCN: </label>l  28000176  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wages.<br/>Economics.
<br/><br/><label>LC Class. No.: </label>HD4912  / .V3