This site uses third-party website tracking technologies to provide and continually improve our services, and to display advertisements according to users' interests. I agree and may revoke or change my consent at any time with effect for the future.
Reprinted from Ultrasonic Instruments
and Devices 01999, Academic Press, Inc.
The book is copyrighted, however this chapter is not, because the authors are
employees of the U.S. Government and perf
