TY  - BOOK
AU  - Subrahmanyam N.
AU  - N.Subrahmanyam
AU  - Brij Lal
TI  - A Textbook of sound
SN  - 0706998170
U1  - 534 22
PY  - 1974///
CY  - New Delhi
PB  - Vikas publishing house
KW  - Sound
N1  - Includes index
ER  -