Databases for books : their uses for selling, acquiring, and cataloguing : proceedings of the Marc Users' Group Seminar, 3 May 1983 / MARC Users' Group. Seminar (1983 : London, England) Machine-readable bibliographic data Great Britain Congresses. Book industries and trade Great Britain Data processing Congresses. 028.7 19 MAD London : Library Association, 1983. 1983. 1983 Text 58 p. : eng LA conference proceedings series in library automation ; 4 Great Britain Great Britain