Variability components for macrophyte communities in rivers : 2008 survey /
Davey, Andrew(Environmental management consultant)
Garrow, David.
Great Britain.Environment Agency.
Natural England (Agency)
Scottish Environment Protection Agency.
Countryside Council for Wales.
Bristol : Environment Agency,
2009.
Cover title.
"SCHO1109BRHO-E-P."
"November 2009."
Includes bibliographical references.