01158nam a2200253 a 4500 111222s1996 enka b 001 0 eng d 96015933 0471967408 (acid-free paper) DLC DLC DLC BD-KhUET 628.164 20 Advances in slow sand and alternative biological filtration / edited by Nigel Graham and Robin Collins. Chichester ; New York : John Wiley, c1996. 461 p. : ill. ; 26 cm. Includes bibliographical references and index. Water Purification Slow sand filtration. Water Purification Fixed-film biological process. Graham, N. J. D. (Nigel Jonathon Douglas), 1953- Collins, M. Robin. Publisher description http://www.loc.gov/catdir/description/wiley032/96015933.html Table of Contents http://www.loc.gov/catdir/toc/onix03/96015933.html 2431 2431 0 0 ddc 0 0 KUETCL KUETCL GEN 2009-04-22 0 628.164 ADV 3010033957 2011-12-24 00:00:00 1 2011-12-24 BK