BC. Information in society BG. Information dissemination and diffusion BJ. Communication BD. Information society BI. User interfaces DC. Public libraries DD. Academic libraries usability A. Theoretical and general aspects of libraries and information AA. Library and information science as a field B. Information use and sociology of information BA. Use and impact of information BF. Information policy BH. Information needs and information requirements analysis BZ. None of these CC. User categories: children CD. User training Design F. Management FD. Public relations FH. Reorganization GA. Information industry GB. Software industry GC. Computer and telecommunication industry GE. Staff HQ. Web pages HR. Portals I. Information treatment for information services IJ. Reference work KF. Planning L. Information technology and library technology LJ. Software LN. Data base management systems LR. OPAC systems Removal activities but in this section education promotion social groups young people