Rajendran, V.. Proceedings of the seventh national symposium on ultrasonics / edited by V. Rajendran. - New Delhi : Allied Publishers , 1996. - xxv,410p. : ills. ; 30X24cm . NULL ISBN: 8170235774 Rs.480.00 Subjects--Index Terms: ULTRASONICS Dewey Class. No.: 620.28 / RAJ/P