Gates Jean key <br/><br/>
Guide to the use of libraries and information sources. 
/ Jean Key Gates,... 
. - 6 th ed. 
. - New York ; St Louis ; Paris [ etc ]  : Mc Graw-Hill, 1989
. - xiv-348 p.  : Couv. ill.   ; 23 cm. 
<br/><br/>Index. 
<br/><br/><label>ISBN: </label>0070229996 
<br/><br/><label>Universal Decimal Class. No.: </label>024.5.