River pollution survey of England and Wales, updated 1975 river quality and discharges of sewage and industrial effluents Department of the Environment and the Welsh Office
Publication details: London H. M. S. O. 1978Description: 60p. forms, col. maps 31cmISBN:- 0117510203
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Booklet (vii,59p. : Sd), 10 fold. sheets ( 10 sides)
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