Spoof, A. R. (1889). Notes about some in Finland found species of non-parasitical worms (Turbellaria, Discophora et Oligochaeta fennica.) Åbo, 28 p., 8:o
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Spoof, A. R.
1889
Notes about some in Finland found species of non-parasitical worms (Turbellaria, Discophora et Oligochaeta fennica.)