01101pam a2200277 a 4500 330195 330195 3922709 NUST 20170613120324.0 920416s1992 enka b 001 0 eng 92016060 041234940X DLC DLC DLC QH545.S49 W44 1992 574.5263 WEL 20 Welch, E. B. (Eugene B.) 2541 Ecological effects of wastewater : applied limnology and pollution effects / E.B. Welch, T. Lindell. 2nd ed. London ; New York : E & FN Spon, 1992. x, 425 p. : ill. ; 25 cm. H.B Includes bibliographical references (p. [381]-414) and index. Sewage disposal in rivers, lakes, etc. Environmental aspects. 2544 Water Pollution. 2539 Lindell, T. 2543 7 cbc orignew 1 ocip 19 y-gencatlg ddc BK IESE 0 0 ddc 0 0 NFIC CL CL GEN 2017-06-13 0 574.5263 WEL IESE-184 2017-06-13 2017-06-13 BK 0 0 ddc 0 0 NFIC IESE IESE GEN 2017-06-13 0 574.5263 WEL IESE-194 2017-06-13 2017-06-13 BK