Perfect ventilation
Subtitle: a constant circulation of pure air, entirely under control : the Aeolus or waterspray ventilator (protected by letters patent in all countries) ...
By: the Aeolus Waterspray, General Ventilating & Electrical Engineering Co
Publisher: Aeolus Waterspray, General Ventilating & Electrical Engineering Co.
Published: 1885
Place of publication: London]
Language: eng
Number of pages: 55
Notes: Includes index.

Cover title.