TY  - BOOK
AU  - Porges G
TI  - Applied acoustics
U1  - C3:7, L7 
PY  - 1977///
CY  - London
PB  - Edward Arnold        
KW  -  Acoustics
KW  -  Sound
KW  - Physics
N1  - Appendix 162-174p; Bibliography 175-176p
ER  -