Langley, Billy C.
Electromechanical and electronic controls for HVAC/R / Billy C. Langley. - Upper Saddle River, New Jersey : Prentice Hall, 1999. - vii, 438 pages ; 24 centimeter.
Includes index.
0139075690
Refrigeration and refrigerating machinery--Automatic control.
Air conditioning--Control.
Heating--Control.
FOR 621.56 L26e 1999
Electromechanical and electronic controls for HVAC/R / Billy C. Langley. - Upper Saddle River, New Jersey : Prentice Hall, 1999. - vii, 438 pages ; 24 centimeter.
Includes index.
0139075690
Refrigeration and refrigerating machinery--Automatic control.
Air conditioning--Control.
Heating--Control.
FOR 621.56 L26e 1999