Practical duct work
Subtitle: a manual for the man who designs and installs ducts
By: by O. W. Kothe.
Publisher: Domestic engineering company
Published: 1939
Place of publication: Chicago
Language: eng
Number of pages: 122
Subjects: Sheet-metal work.; Air-pipes.
Other titles: Duct work.
Notes: Half-title: Practical duct work for air conditioning, heating and ventilating.
"First edition."