text London International Textbook 1971 Ind 661 p. : ill. ; 18 cm. 661 p. : ill. ; 18 cm. Index: p. 651 CLARK, John W. WATER SUPPLY POLLUTION CONTROL 628.19 628.19CLAw INLIS000000000008190 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)