World guide to trade associations 

 - 2nd ed.  
 - London:   K-G Saur Munchen,   1980 
 - xvi, 845p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Subjects--Index Terms: </label>Trade 
<br/><br/><label>Universal Decimal Class. No.: </label>R 38:061(100)(026)  / M0