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Semisalsa stagnorum
Apertural view of the shell of Semisalsa stagnorum.
Howson, C.M.; Picton, B.E. (Ed.) (1997). The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, 276. The Ulster Museum: Belfast, UK.
ISBN0-948150-06-8. vi, 508