andwithanintegrated approach tothevarious library management procedures, such asordering, cataloguing, indexing, serials check-in, stockcontrol andloans,is necessary fortheenhancement oftheUNBISretrieval system. Reference tools, such asIndexes toProceedings oftheSecurity Council 1950-1963 andUnitedNations reference sources, willbeissuedbymeansofsuitable output programmes; -17- .~.,..,..'.'..'.'..•.'...•.f 1 ~ Digitized by Dag Hammarskjöld Library(i)Appropriate linkage willbeestablished between thededicated library system andtheIntegrated Management Information SystemoftheUnitedNations and itsdevelopment andoperation willbewithintheframework ofco-operation established bytheAdvisory Committee fortheCo-ordination ofInformation Systems; (j)Aspartoftheintroduction oftheoptical discsystemforstorage and retrieval ofdocuments, measures willbetakentoenhance UNBIS,whichwillbeused forfullindexing tofacilitate retrieval ofdocuments; (k)Inordertominimize possible additional storage requirements for documents andpublications andtopreserve historical material, itisplanned to transfer olderdocuments tooptical discstorage, requiring acorresponding retrospective conversion ofnon-machine-readable library data. 1/SeeOfficial Records oftheGeneral Assembly, Forty-first Session, Supplement No.49(A/41/49), pp.7-8. -18- Digitized by Dag Hammarskjöld Library