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		Water pollution control : a guide to the use of water quality management principles / edited by Richard Helmer and Ivanildo Hespanhol. by Helmer, Richard \| Hespanhol, Ivanildo \| World Health Organization. Material type: Text; Format: print Publication details: London : E & FN Spon, 1997Online access: Click here to access online Availability: Items available for loan: WHO HQ (3)Call number: WA 689 97WA, ... Place hold Add to cart (remove)
		No cover image available Upgrading waste stabilization ponds effluent by rock and gravel filters : final report presented to the International Development Research Centre / by the Royal Scientific Society, Environmental Research Centre, Water & Soil Division ; S. A. Ramadan (principal investigator), M. Y. Saidam (co-principal investigator) by Royal Scientific Society (Jordan). Environmental Research Centre . Water & Soil Division \| Ramadan, S. A \| Saidam, M. Y \| International Development Research Centre (Canada). Material type: Text; Format: print Publication details: Amman : Royal Scientific Society, 1992Availability: Items available for loan: WHO HQ (1)Call number: WA 785 92RO. Place hold Add to cart (remove)

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