Journal Article ON THE EXISTENCE OF DISCRETE MORPHOLOGICAL TYPES WITHIN THE SPECIES POTAMOPYRGUS JENKINSI (SMITH) Get access J. F. SIMPSON J. F. SIMPSON Department of Biology, University of StirlingScotland Search for other works by this author on: Oxford Academic Google Scholar Journal of Molluscan Studies, Volume 42, Issue 1, April 1976, Pages 108–113, https://doi.org/10.1093/oxfordjournals.mollus.a065312 Published: 01 April 1976
David W. FoltzHoward OchmanJane JonesR K Selander