|
1
|
|
|
|
TK7871.89
.L53
.S6
|
50 simple L.E.D. circuits
|
London, [ United Kingdom ] : Bernard Babani (Publishing) Ltd , 1977
|
Soar, R. N
|
|
23841
|
|
2
|
|
|
|
TK7871.89
.L53
.S6
|
50 simple L. E. D. circuits
|
London, [ United Kingdom ] : Bernard Babani (Publishing) Ltd , 1981
|
Soar, R. N
|
|
23842
|