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	1.		Rain and stormwater harvesting in rural areas / a report by The United Nations Environment Programme by United Nations Environment Programme Series: Water resources series ; Volume 5Publisher: Dublin : Tycooly International Publishing, 1983 Availability: Items available for loan: Central Library المكتبة المركزية (1). Add to cart (remove)
	2.		Water pollution control : a guide to the use of water quality management principles / edited by Richard Helmer and Ivanildo Hespanhol. by Helmer, Richard, 1943- Hespanhol, Ivanildo United Nations Environment Programme Water Supply and Sanitation Collaborative Council World Health Organization Edition: 1st. ed. Publication details: London ; New York : E & FN Spon, 1997 Online resources: Publisher description Availability: Items available for loan: هندسة النفط والتعدين (1). Add to cart (remove)

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