The quality of rivers and canals in England and Wales (1990 to 1992)
Subtitle: as assessed by a new general quality assessment scheme
By: report of the National Rivers Authority.
Series: Water quality series -- no.19
Publisher: H.M.S.O.
Published: 1994
Place of publication: London
Language: eng
Number of pages: 40
Notes: Folding map entitled 'River quality 1990' in pocket at back.