Hope's ventilation and gas filtration for air raid shelters.

Title: 
Hope's ventilation and gas filtration for air raid shelters.
Author/Artist: 
Henry Hope & Sons, Birmingham, England.
Publisher: 
Birmingham : Henry Hope & Sons, [n.d., 1935?-1938?]
Description: 
1 folded brochure ([6] p.) : ill. ; 27 cm.
Bib ID: 
109038
Notes: 
Cover title.
Trade catalog.
"List no. 195"--P. [6].