Proceedings of the 7. International Congress on Acoustics. Budapest, 18-26. Aug. 1971. General progress papers, round table conferences, Section E: General acoustics - International Congress on Acoustics 1. (Budapest, 1971)

SUPPORTED by the INTERNATIONAL COMMISSION ON ACOUSTICS of the INTERNATIONAL UNION OF PURE AND APPLIED PHYSICS the DEPARTEMENT 1st OF NATURAL SCIENCES of the HUNGARIAN ACADEMY OF SCIENCES the STATE OFFICE FOR TECHNICAL DEVELOPMENT Printed in Hungary

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