Annual Session (53rd: 1997: Colombo) Proceedings of the 53rd annual session (09-12 December, 1997) - 2v. (v.1-427; v.2-120 p.) Contents: part I-abstracts; part-II-Presidential addresses, guest lectures review paper ISBN: ISSN 1391-023X Dewey Class. No.: 507.2 / ANN