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LIBRARY
SUBJECT
Life in lakes and rivers (1951)
A key to the British species of corixidae (hemiptera-heteroptera) (1939)
A key to the British water bugs (1941)
A revised key to the British water bugs (1956)
A key to the British fresh- and brackish water gastropods (1949)
A key to the British species of crustacea: malacostraca occurring in fresh water (1960)
A key to the nymphs of the British species of ephemeroptera (1961)