Specification of George Harman Barth : apparatus for administering gases for curative purposes.
- Barth, George Harman.
About this work
London : Great Seal Patent Office, 1854 (London : George E. Eyre and William Spottiswoode)
5 pages, 1 folded leaf of plates : illustrations ; 28 cm
At head of title: A.D. 1854. No. 641.
"George Harman Barth, of 4, Mornington Crescent, Hampstead Road, in the county of Middlesex, medical galvanist".