The effects of regulation on the freshwater invertebrates of the Afon Clywedog.
Contributors: Severn-Trent Water Authority. Directorate ofScientific Services.
Series: Craig Goch Research Team report -- no.2; Craig Goch Joint Committee ecological investigations
Publisher: Severn-Trent Water Authority, Directorate of Scientific Services
Published: 1980
Place of publication: [s.l.]
Language: eng