The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.


  • Isotype: Collins, F. S. 1918. Tufts College Studies, Scientific Series. 4: 81.
  • Isotype: Wittrock, V. B. & Nordstedt, C. F. O. 1884. Alg. Aq. Dulc. Exs. 13: no. 621.


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