MASTER TRANSISTOR SUBSTITUTION HANDBOOK - FIRST EDITION,

Radio Library No 1 - Radio Set Analyzers & How To Use Them by L Van der Mel 1931

Master Handbook of 1001 Practical Electronic Circuits, 1975 First Edition

Tube Substitution Handbook

Radio Library No 1 - Radio Set Analyzers & How To Use Them by L Van der Mel 1931

The Giant Handbook Of Electronic Circuits Raymond A. Collins 1980 First Edition

TUBE SUBSTITUTION HANDBOOK By Staff

Sam’s Tube Substitution Handbook, Vol. 1, First Edition, 1960, Used