It works while you sleep
Series: CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 99743
Publisher: s.n.
Published: 1992
Place of publication: [St. Marys, Ont.?
Language: eng
Format: Microform
Subjects: Corrosion and anti-corrosives.; Steam-boilers -- Incrustations
Notes: Cover title.

At head of title: A. D. Colquhoun Boiler Cleanser Company St. Marys, Ont.

Filmed from a copy of the original publication held by the National Archives of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1992.

[4] p. ; 22 cm.