TY  - BOOK
AU  - Basic Science Series, 
TI  - Sound - 11
U1  - 534 
PY  - 1900///
CY  - Kottayam
PB  - NATIONAL BOOKSTALL
KW  - General stack
KW  - Natural science & Mathematics
KW  - Physics
KW  - Sound & related vibrationsGeneralia
ER  -