Information sector as Economical Category

About at the break of sixties and seventies of this century the first functional and publicly used information system developed from originally experimental and non commercial applications of computer technology in storing and retrieval of document records. At the beginning these were mostly parallel editions of bibliographies in both printed and magnetic format. Thus developed on one hand data bases of national bibliographies derived from the MARC project of the Library of Congress and on the other hand special and specialized data bases such as CHEMBASE, INSPEC, ERIC or WPI. At the same time important commercial online information retrieval service centers , DIALOG, ESA-IRS, DIMDI, STN and others were beginning to operate. Also at that time thoughts about delineating new branch in world economy "the information sector" were springing up.