Severns, William H.

Air Conditioning & Refrigeration Severns, william H. Year not listed Air conditioning and refrigeration Severns, William H. 1958 Air conditioning and refrigeration Severns, William H. 1958 Air conditioning and refrigeration Severns, William H. 1956 Air Conditioning and Refrigeration Severns, William H. Year not listed Air conditioning and refrigeration Severns, William H. 1958 Air conditioning and refrigeration Severns, William H 1958 Heating ventilating and air-conditioning fundamentals Severns, William H. Year not listed Heating, Ventilating and Air-Conditioning Fundamentals Severns, William H. 1949 Heating, Ventilating and Air-Conditioning Fundamentals Severns, William H. 1949 Steam, air and gas power Severns, William H. 1948 Steam, air, and gas power Severns, William H. 1954 Steam, air, and gas power Severns, William H. 1953