Distribution studies of waders and shelduck in the Severn Estuary.
British Trust for Ornithology.
Clark, N. A.
Energy Technology Support Unit (Great Britain)
[London] : Department of Energy,
1990.
Prepared by N.A. Clark for the Energy Technology Support Unit as part of the Department of Energy's Renewable Energy Research and Development Programme.
Charadriiformes
Shelduck
Tidal power-plants