TY  - BOOK
AU  - Bowron,P.
AU  - Stephenson,F.W.
TI  - Active filters for communications and instrumentation
SN  - 0070840865
AV  - TK7872.F5 B69
U1  - 621.3815/32 
PY  - 1979///
CY  - London, New York
PB  - McGraw-Hill Book Co.
KW  - Electric filters, Active
N1  - Includes bibliographical references and index
ER  -