TY  - BOOK
AU  - Richardson,E.G.
TI  - Sound: a physical text-book 
U1  - 534 23
PY  - 1953///, [reprinted 1961]
CY  - New York, London
PB  - Longmans, Green & Co., E. Arnold & Co.
KW  - Sound
N1  - Printed in Great Britain; Includes bibliographical footnotes and index
ER  -