			La calidad de las aguas y su tratamiento / Wolfgang Pürschel ; trad. Julia Zarco Weidner ; rev. Manuel Villar Castejon, Eduardo DewismePublication: Bilbao : Urmo, S. A. de Ediciones, 1982Description: 100 p. : il. ; 25 cmAvailability: Items available for loan: [PUR. 628.1] (1). Place hold Add to cart (remove)
			The nalco water handbook / Nalco Chemical Company ; edit. Frank N. Kemmer, John McCallionPublication: New York : McGraw-Hill Book Company, 1979Description: [pág. var.] : il. ; 24 cm.Availability: Items available for loan: [KEM. 628.1] (1). Place hold Add to cart (remove)

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