Biology of polluted water - Clough, Frank; Mersey and Veaver River Unit; Open University (Milton Keynes : The Open University Press, 1975)
Examines the use of biotic index, a relatively simple scheme for grading river quality according to river fauna. Comparas the biotic indexes of polluted and inpolluted stretches of the Tame, which rises on Saddleworth Moor and runs through and industrial area of River Mersey
Backup available in VHS 1/2 in.
Bahan rosak (Lupus)
Keywords: Water -- Pollution -- Measurement