Harold Farnsworth Gray, Sewerage in Ancient and … · Harold Farnsworth Gray, "Sewerage in Ancient...
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Harold Farnsworth Gray, "Sewerage in Ancient and Medieval Times," Sewage Works Journal, Volume 12, No. 5 (Sept. 1940), pp. 939 - 946. Reprinted with permission from Sewage Works Journal. Copyright 1940 Water Environment Federation, Alexandria, VA.
Transcript of Harold Farnsworth Gray, Sewerage in Ancient and … · Harold Farnsworth Gray, "Sewerage in Ancient...
Harold Farnsworth Gray, "Sewerage in Ancient and Medieval Times," Sewage Works Journal, Volume 12, No. 5(Sept. 1940), pp. 939 - 946. Reprinted with permission from Sewage Works Journal. Copyright 1940 Water
Environment Federation, Alexandria, VA.