History of
  Turbellarian Research
      compiled by Steve Schilling
author: Hofsten N v
title: Zur Kenntnis der Tiefenfauna des Brienzer und des Thuner Sees.
publication: Arch Hydrobiol. Planktonk. (Stuttgart) 7, 1911-1912. (Separatabdruck 1911, 128 pages)
year: 1911

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