10 books
Study Guide for the Associate-Level CET Test
Electronic Troubleshooting and Servicing Techniques
Introduction to Microprocessor Theory and Operation
Communications Licensing and Certification Examinations
Practice Tests for Communications Licensing and Certification Examinations
Industrial Electronics for Technicians
Complete Electronics Career Guide
CET Study Guide
V. O. M., V. O. T. M. Handbook
Basic Electricity/Electronics