Specification of William Frost Sweetland and John Merfield : purifying sewage.

  • Sweetland, William Frost.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Frost Sweetland and John Merfield : purifying sewage. Source: Wellcome Collection.

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    S PE CIFICATION N“ 2832. WIELIAM FROST SWEETLAIJD AND JOHN MEBFIELD pTOifying sewage LONDON: ilKTED BY GEORGE E. EYRE AND WILLIAM SrOTTlSWOODE, OPBINTBES TO THE (iCEEN’8 MOST EXCELLENT MAJESTT: ? PUBLISHED AT THE GREAT SEAL PATENT OFFICE, ' 25, SOUTIIAMPTOS BUILPINGS, HOLBOBK. IT ■.' '' 1871.