Wilson Brian J Ed. Aslib Directory Information Source in Science ,Technology and Commerce - 3rd - London Aslib UK 1970 - 920p V.1 849p V.2 cm. ISBN: 851420001 Standard No.: 47799 Source: Textual Subjects--Topical Terms: LIBRARY SCIENCE Dewey Class. No.: 2n3,N29, L0.1-.2