Specification of William Brown Rooff : construction of respirators.
- Rooff, William Brown.
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About this work
London : Great Seal Patent Office, 1857 (London : George E. Eyre and William Spottiswoode)
4 pages, 1 folded leaf of plates : illustrations ; 28 cm
At head of title: A.D. 1848. No. 12,273.
"William Brown Rooff, of Stanhope Street, Regent's Park, in the county of Middlesex, chemist."