TY  - BOOK
AU  - CRAWFORD
TI  - WAVES VOL-III
T2  - P179
SN  - 9780070667303
U1  -  530 CRA 
PY  - 2008///
CY  - India
PB  - TATA MCGRAWHILL
KW  - Science and Humanities
N1  - PAI&SONS
ER  -