Some observations on our present methods of disposal of human excreta, and their relation to the spread of epidemic disease : being a paper read to the Glasgow Philosophical Society, 30th March, 1881 / by Eben. Duncan.

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Some observations on our present methods of disposal of human excreta, and their relation to the spread of epidemic disease : being a paper read to the Glasgow Philosophical Society, 30th March, 1881 / by Eben. Duncan. Public Domain Mark. Source: Wellcome Collection.

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