Turbellarian taxonomic database

author date   title journal / publication
Papi F 1950 index card avail.
 		 Sulle affinita morfologiche nella fam. Macrostomidae (Turbellaria). Boll Zool (Suppl) 17:460-468.
Protomacrostomum groenlandicum Steinböck, 1935 w other research on this sp. 461 (footnote)