BF. Information policy DC. Public libraries DB. National libraries DG. Private libraries CC. User categories: children I. Information treatment for information services social groups young people BC. Information in society BD. Information society BG. Information dissemination and diffusion DD. Academic libraries FE. Personnel management GE. Staff GF. Biographies GG. Curricula aspects GZ. None of these HD. Rare books and manuscripts IA. Cataloging ID. Knowledge representation IF. Information transfer: protocols JI. Circulation KD. Vehicles bibliographic control but in this section formats techniques