British Red Data book.
Bratton, J. H.
English Nature (Agency)
Scottish Natural Heritage (Agency)
Countryside Council for Wales.
Joint Nature Conservation Committee (Great Britain)
Peterborough : Joint Nature Conservation Committee,
1991.
The Joint Nature Conservation Committee is a committee of the three country councils (English Nature, the Nature Conservancy Council for Scotland and the Countryside Council for Wales).
Invertebrates
Endangered species
Rare animals