00917nam a2200253Ia 4500 278575 OCoLC 20181009022715.0 051018s2005 ag a b 000 0 spa d 9872207429 U@S spa U@S PL# PUXA Z711.45 .B75 2005 025.52 R6961s Rodríguez Briz, Fernanda Local 160834 Los servicios de referencia virtual surgimiento, desarrollo y perspectivas a futuro Fernanda Rodríguez Briz. 1. ed. Buenos Aires Alfagrama 2005. 156 p. ill. 22 cm. Includes bibliographical references (p. 143-156). Electronic reference services Libraries Local 91216 Internet in library reference services Local 115748 Reference services (Libraries) Information technology. Local 157770 200210 200210 0 0 ddc 0 025_520000000000000_R6961S 0 evl 275523 10 10 1 2016-05-27 Peter Saladini 19.00 405774 0 025.52 R6961s 80000002308297 2017-05-18 00:00:00 r:278575 6