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Karling T.G. (1983) Phylogeny of Paragnathorhynchus Meixner and Aculeorhynchus Schilke (Turbellaria, Kalyptorhynchia) Zoologica Scripta 12: 73-76
Karling T.G. (1983) Phylogeny of Paragnathorhynchus Meixner and Aculeorhynchus Schilke (Turbellaria, Kalyptorhynchia) Zoologica Scripta 12: 73-76