Home›Books›Guide to the E. P. A. Refrigerant Handling Certification ExamGuide to the E. P. A. Refrigerant Handling Certification Examby Boyce H. Dwiggins, Edward F. MahoneyNo description available.Refrigeration and refrigerating machineryTechnicians in industryStudy guidesCertificationExaminations, questionsIndustrial technicians