The a-1 through a-8 and l1 of Motor Age ASE Certification Self-Study Guide 9 books cover a wide range of subjects in the automotive industry, including heating & air conditioning, engine performance, engine repair, electrical systems, brakes, advanced engine performance, automatic transmission transaxle, suspension and steering, and manual drivetrain and axles. Published by Motor Age in 2000, this study guide series is designed for self-study at various proficiency levels, from beginner to advanced. Written in English and authored by Motor Age, this comprehensive resource is perfect for individuals looking to enhance their knowledge and skills in the automotive field.