NLL announcement bulletin 

 - London :  NATIONAL LENDING LIBRARY FOR SCIENCE AND TECHNOLOGY, 
 - Mensual 
<br/><br/><label>ISSN: </label>0007-1749 
 = NLL announcement bulletin 
 = NLL ANNOUNCE. BULL. 
<br/><br/><label>Subjects--Index Terms: </label>CIENCIAS DE LA INFORMACION BIBLIOGRAFIA;  INDICES