TY  - BOOK
TI  - Stairstep, tracking and successive approximation A/D   
T2  - Bergwall Productions   
SN  - 0806410884   
PY  - 1992///.
CY  - Crowborough
PB  - Audio Visual Source, 
KW  - Electric filters
KW  - Design and construction
KW  - Approximotion method
N1  - Includes contents; VHS/NTSC
ER  -