Ultrasonics Symposium B.R.McAvoy., Ultrasonics Symposium(Atlanta, 1983) 1972 Ultrasonics Symposium 1975 Ultrasonics Symposium 1976 Ultrasonics Symposium 1977 Ultrasonics Symposium 1979 Ultrasonics Symposium 1980 Ultrasonics Symposium IEEE Ultrasonics Symposium 1978 UL trasonics symposium Proceedings