E.
S. Burioni
http://www.burioni.it
E.
S. Burioni
http://www.burioni.it
DEA
http://www.deanet.it
Cenfor
International
http://www.cenfor.it
IF
s.r.l.
http://www.ifnet.it/
OVID
Technologies
http://www.ovid.com
SILVERPLATTER
http://www.silverplatter.com
The
DIALOG Corporation
http://www.dialog.com
European
Information Network Services - EINS
http://www.eins.org
Online
Computer Library Center- OCLC
http://www.oclc.org
Distributore italiano dei servizi OCLC è IF
di Firenze
K
G SAUR
http://www.saur.de/
QUESTEL-ORBIT
http://www.questel.orbit.com
STN
International
http://www.cas.org/stn.html
CAMBRIDGE
SCIENTIFIC ABSTRACTS
http://www.csa.com
RESEARCH
LIBRARIES GROUP RLG Eureka
http://www.rlg.com
INFORMATION
ACCESS COMPANY International Division
http://www.international.iacnet.com
ENGINEERING
INFORMATION INC.
http://www.ei.org
CHADWYCK-HEALEY
http://www.chadwyck.co.uk
UMI
- University Microfilm International
http://www.umi.com
ISI
- Institut for Scientific Information
http://www.isinet.com
H.W.WILSON
http://www.hwwilson.com/
Per una rassegna ragionata di AGGREGATORI DI DATABASE si rimanda alla Pagina AGGREGATORI di DATABASE on-line information service: ToC, SDI, SpotLight, Full-Text
