Specification of Julius Jeffreys : respirators.

  • Jeffreys, Julius, 1800-1877.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Julius Jeffreys : respirators. Source: Wellcome Collection.

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    IEFFREY S Specification {/ sjn F I C . 8 . FIC.9. FIC.IO. fiZed dratviretf z>partfy colored/. j ' Ulutol oil Stone Ijy-Malby&