A Practical Treatise on the Principles and General Application of Steam, Hot Water, Vapor, Vacuum, and Forced Air for Heating; Split Systems for Heating and Ventilating; Air Conditioning for All Types of Buildings.
J. RALPH DALZELL, B.S.
Head, Architectural Engineering Department, American School
CHARLES L. HUBBARD, S.B., M.E.
Consulting Engineer on Heating, Ventilating, Lighting, and Power ILLUSTRATID
AMERICAN TECHNICAL SOCIETY CHICAGO, U. S. A., 1939