PPM for Heating and Cooling Technicians (Delmar’s Practical Problems in Mathematics) (6th Edition) (Paperback) by Russell DeVore

ISBN # 978-1-11154-135-4 

Approximate Cost – New: $62.00 to Gently Used: $45.00 

Refrigeration and Air Conditioning Technology Lab Manual (7th Edition) by Bill Whitman, Bill Johnson, John Tomczyk, Eugene Silberstein

ISBN #978-1-11164-448-2 

Approximate Cost – New: $95.00 to Gently Used: $40.00 

Refrigeration and Air Conditioning Technology (7th Edition) by Bill Whitman, Bill Johnson, John Tomczyk, Eugene Silberstein

ISBN #978-1-11164-447-5 

Approximate Cost - New: $150.00 to Gently Used: $85.00 

SHEET METAL  (2^nd Edition) (Paperback) by Leo A. Meyer

ASIN#  B019NDR8X6

Approximate Cost – New: $98.00