Guide to the E. P. A. Refrigerant Handling Certification ExamBoyce H. Dwiggins, Edward F. Mahoney · First published 1999Open the Tome
Today's Technician Classroom Manager to Accompany Automotive Heating and Air ConditioningBoyce Dwiggins · First published 1996Open the Tome
Automotive electricity and electronicsBoyce H. Dwiggins, Edward F. Mahoney · First published 1995Open the Tome
Practical Problems in Mathematics For Automotive TechniciansBoyce H. Dwiggins · First published 1972Open the Tome
