Gretler, Armin. <br/><br/>
The training of adult middle-level personnel. 
/ Armin, Gretler 
 - Paris :  Unesco,  1972. 
 - 164 p. ;  24 cm. 
<br/><br/> Label mounted on t.p.: Unipub, Inc., Box 433, New York, N.Y. 10016, exclusive U.S. distributor. 
<br/><br/>Includes bibliography: p. 145-159. 
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Occupational training.<br/>Supervisors.<br/>Industrial technicians.
<br/><br/><label>Dewey Class. No.: </label>658.31243