Instant messaging systems / 
Dreamtech Software Team. 
 - New York :  Wiley Publishing,  2002. 
 - XV, 684, [20] s. :  il. ;  24 cm +  1CD ROM. 
 - Cracking the Code. .
<br/><br/> Indeks. 
<br/><br/><label>ISBN: </label>0764549537 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Systemy informacyjno-wyszukiwawcze.
<br/><br/><label>Universal Decimal Class. No.: </label>002.513.5