Enviar aquest missatge de text: Second Conference on Recent Advances in Active Control of Sound and Vibration : Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 28-30 April, 1993 / general chairman, C.R. Fuller ; technical chairman, R.J. Silcox ; program editor, R.A. Burdisso ; sponsored by NASA Langley Research Center, Office of Naval Research, U.S. Army Aerostructures Directorate.