Electronic Projects for Experimenters by Penfold, R. A. Paperback / softback The

Electronic Projects for Your PC: 320 (... by Penfold, R. A. Paperback / softback

Practical Electronic Building Blocks Book 2 by R.A. Penfold Paperback - RARE

Operational Amplifier User's Handbook by Penfold, R. A. Paperback / softback The

SocioDynamic Counselling: A Practical... by Peavy, R. Vance Paperback / softback

Practical Fibre-optic Projects: 374 (B... by Penfold, R. A. Paperback / softback

Electronic Security Devices by R. A. Penfold 1979

More Advanced Uses of the Multimeter: ... by Penfold, R. A. Paperback / softback