John Tomczyk

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Refrigeration and Air Conditioning Technology: Concepts, Procedures and Troubleshooting Techniques
Whitman, Bill; Johnson, William M.

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� 2.81

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Refrigeration and Air Conditioning Technology
Tomczyck, John; Whitman, Bill; Johnson, Bill

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� 5.76

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The Hvac/R Professional's Field Guide to Universal R-410a Safety & Training: Delta-T Solutions
Tomczyk, John; Nott, Joe; Shaw, Dick

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� 11.32

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Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems
Tomczyk, John

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� 18.59

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System Diagnostics and Troubleshooting Procedures
Tomczyk, John

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� 26.63

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Basic Refrigeration & Charging Procedures
Tomczyk, John

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� 31.74

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Refrigerant Transition & Recovery Certification Program Manual for HVACR Technicians (Delmar's Test Preparation Series)
Delta-T Solutions, Inc., Delta-T Solutions, Inc.

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� 35.79

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