TY  - GEN
AU  - Butt, Capt Asam   (TE-22)
TI  - Active filters- ACT 1+1
U1  - 621.382 
PY  - 1990///
CY  - MCS
PB  - UET, Lahore
KW  - UG Projects
KW  - TE-22
ER  -