Sharp, J.R. Information retrieval:notes for students - Andre Deutsch London 1970 - 90 - Information retrieval Indexing language SDI service Citation index ISBN: 233 96166 6 = Sharp, J.R. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 1615 Nat. Bib. Agency Control No.: 025.5SHA Subjects--Topical Terms: Librarianship Universal Decimal Class. No.: 025.5