Practical Electronics - magazine / February 1973

Vintage Elementary Electronics Magazine December 1973

everyday electronics / Vintage Magazine - September 1973

Elementary Electronics Magazine DC-4 Disc July/August 1973

Vintage Elementary Electronics Magazine December 1973

everyday electronics / Vintage Magazine - March 1973

everyday electronics / Vintage Magazine - July 1973

McGraw-Hill Vintage Electronics Magazine July 19 1973 Vol 46 Issue No 15