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			Community wastewater collection and disposal by Okun, Daniel A Ponghis, George Language: English Publication details: Geneva WHO 1975 1975 Availability: Items available for reference: Medical Library: Not for loan (2)Location, call number: Journal Section 628.119O48, ... Request article Add to cart (remove)
			Surface water treatment for communities in developing countries by Schulz, Christopher R Okun, Daniel A Language: English Publication details: London ITP 1982 1982 Availability: Items available for loan: Agricultural Library (1)Location, call number: Lending Section 628.162 SCH. Place hold Request article Add to cart (remove)

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