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Credit
A plain exposition of the only practical and sure system for the prevention of disease ever offered to the public : Prospectus of the Manhattan anti sewer gas company ... Everything pertaining to house sanitation. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.