TY  - BOOK
AU  - Graf,Rudolf F.
AU  - Whalen,George J.
TI  - 25 solid-state projects
U1  - 621.381530422 
PY  - 1972///
CY  - New York
PB  - Hayden Book Co.
KW  - Electronics
KW  - Amateurs' manuals
KW  - Transistor circuits
ER  -