Guide to the HVAC/R certification and competency tests /
Featherstone, Robert. ,
Guide to the HVAC/R certification and competency tests / Robert Featherstone, Jesse R. Riojas. - 2nd ed. - vii, 340 pages : illustrations ; 28 cm.
0131149490
Heating --Problems, exercises, etc.
Air conditioning --Problems, exercises, etc.
Ventilation --Problems, exercises, etc.
Mechanics (Persons) --Certification --United States.
TH7015 / .F42 2005
Guide to the HVAC/R certification and competency tests / Robert Featherstone, Jesse R. Riojas. - 2nd ed. - vii, 340 pages : illustrations ; 28 cm.
0131149490
Heating --Problems, exercises, etc.
Air conditioning --Problems, exercises, etc.
Ventilation --Problems, exercises, etc.
Mechanics (Persons) --Certification --United States.
TH7015 / .F42 2005