Fish helminths as indicators of pollution and as monitors of water quality in the North Sea /
Williams, H. Harford.
Williams, B.
Great Britain.Department of the Environment.
North East Atlantic Marine Research Programme.
London : Marine Division, Department of the Environment,
1993.
Funded by the Department of the Environment.
Cover title.
At head of title: North East Atlantic Marine Research Programme.
Includes bibliographical references.