Potable water : how to form a judgment on the suitableness of water for drinking purposes, addressd to medical officers of health and sanitary authorities, etc / by Charles Ekin.
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Potable water : how to form a judgment on the suitableness of water for drinking purposes, addressd to medical officers of health and sanitary authorities, etc / by Charles Ekin. Credit: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.. Public Domain Mark