Roydon Publishing Co. Ltd THE COLLEGE ENCYCLOPEDIA - Roydon Publishing Co. Ltd LONDON 1985 - [ii] , 450 p. 25 cm ISBN: 0946674205 Nat. Bib. Agency Control No.: 030 COL Subjects--Topical Terms: General Encyclopedia Worksසාමාන්ය විශ්වකෝෂ කෘති Dewey Class. No.: 030 / COL