00902nam a2200277 4500 000 20170728133024.0 000 000 000 78318787 F*** 9231014730 UOEL DLC DLC TD367 .I13 1978 628.1/61 IHD-WHO Working Group on Quality of Water. Water quality surveys : a guide for the collection and interpretation of water quality data / prepared by the IHD-WHO Working Group on Quality of Water. Paris : Unesco ; Geneva : WHO, 1978. 350 p., [1] fold. leaf of plates : ill. (some col.) ; 24 cm. Studies and reports in hydrology ; 23 Includes bibliographies. Water quality Measurement. 7 cbc orignew 4 ncip 19 y-gencatlg lcc SBK 14992 14992 0 0 lcc 0 0 UOE UOE GEN 2017-07-28 0 TD367 .I13 1978 20018595 2017-07-28 00:00:00 20018595 2017-07-28 SBK