Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
The plumber and sanitary houses. : A practical treatise on the principles of internal plumbing work, or the best means for effectially excluding noxious gases from our houses / by J. Stevens Hellyer. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.