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Credit
The water question : a letter, addressed (by permission) to the Rt. Hon. the Earl of Derby, K.G., explaining a proposal for the supply of the metropolis from the higher sources of the Thames in conjunction with the storage of surplus waters / by J. Bailey Denton. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.