A key to the British fresh - and brackish - water gastropods : with notes on their ecology /
Macan, T. T.
A key to the British fresh - and brackish - water gastropods : with notes on their ecology / by T. T. Macan illustrated by the late R. Douglas Cooper. - Fourth edition. - [s. l] : Freshwater Biological Association, 1977. - 46 p. : ill. ; 23 cm.
Gastropoda--United Kingdom.
A key to the British fresh - and brackish - water gastropods : with notes on their ecology / by T. T. Macan illustrated by the late R. Douglas Cooper. - Fourth edition. - [s. l] : Freshwater Biological Association, 1977. - 46 p. : ill. ; 23 cm.
Gastropoda--United Kingdom.
