KARUNARATNA, D.M. A Guide to law of trade marks and service marks in Sri Lanka / D.M. Karunaratna - Ratmalana Sarvodaya Vishva Lekha pub. 1997 - 171 p. includes index. ISBN: 9555990794 Subjects--Topical Terms: Trade marksService marks Dewey Class. No.: 346.0488 / KAR