00897cam a2200277 a 4500 1768069 BD-DhUL 20141202143747.0 900117s1990 enkab b 001 0 eng 90000326 185293073X L.30.00 1768069 LC eng BD-DhUL BD-DhUL QH541.5.S7 H37 1990 574.5/26323 20 574.526323 21 HAR Haslam, S. M. (Sylvia Mary), 1934- River pollution : an ecological perspective / S.M. Haslam ; illustrated by Y. Bower. London ; Belhaven Press, c1990. xii, 253 p. : ill., maps ; 26 cm. Includes bibliographical references ([236]-249) and indexes. Stream ecology. Water Pollution Environmental aspects. ddc BK ANL YY 574.526323 H352 21351 21351 0 0 ddc 0 574_526323000000000_HAR 0 NFIC 40995 DUSL DUSL GEN 1993-09-13 Purchased 574.526323 HAR 342082 2014-12-02 1 2014-12-02 BK