The Australian National Library has responsibility for the development of bibliographic services in Australia. This study is a draft document designed to facilitate discussion of the concept of a national bibliographic support system. It considers the feasibility of a national on-line cataloging system to reduce costs and provide output products. The following aspects are outlined: (1) aims and objectives of the proposed system; (2) system constraints; (3) data base composition and control; (4) system outputs; (5) system management; (6) training and consultative services; (7) computing system; (8) network administration and management; (9) implementation plan; (10) cost/benefits; and (11) charging. Supportive data and a questionnaire on national shared cataloging systems are included in the appendices. (KP)