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4

d BASE IV


" (( )) ASHTON TATE 1980 (()) d BASE II d BASE III d BASE III Plus (1)" d BASE IV .


Aknight Ridder CompanyPress Link on Line

WWW.presslink.com

ɡ .


Bowker Saur

WWW.bowker-saur.com/service


.



TDC Link

WWW.Lib.cuhk.edu.hk


20 .


Computer search services university of verginia


. 300 : Biosis Psyeinfomedicine


Data Time

www.enews.com/custer/datatimes


ѡ 500 200 .


Derwent

www.derwent.co.uk/navigatdr/prices/97subacchtm/


.


Silver platter

www.silverplatter.com


.


MESERVE Network

www.mednetwork.com


" "(2).


Access Russia,Inc the in formation Delivery company

www.arussia.com/ehom.html


.

(())

Maruzen

www.maruzen.co.jp


1869 ɡ .



BIBSYS Data Base

www.bibsy.no


1977


Information Technology and communication.ITC

www.medvirginia.edu/hu.library




WLN

WLN Data Base

www.wlin.com


11 (ILL) MARC .


Uncover

www.carl.org



17.000 .


Publisher`s Depot

www.publishersdepot.com


350 .


(OCLC) On Line Computer Library center
www.ocle.org


1966 ( ) ...... 1972 1972 1977 2500 .



1977 300 .



BLAISE

1995 .


The ERIC Data Base


ERIC 1999 888.059 100 ɡ .

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(())



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