The production of bullheads (Cottus gobio L.) in the upper River Severn, 1978.
Contributors: Severn-Trent Water Authority. Directorate of Scientific Services.
Series: Craig Goch Research Team report -- no.8; Craig Goch Joint Committee ecological investigations
Publisher: Severn-Trent Water Authority, Directorate of Scientific Services
Published: 1980
Place of publication: [s.l.]
Language: eng