Gmelin, J. F. (1791). Vermes. In: Gmelin J.F. (Ed.) Caroli a Linnaei Systema Naturae per Regna Tria Naturae, Ed. 13. Tome 1(6). G.E. Beer, Lipsiae [Leipzig]. pp. 3021-3910. Systema Naturae. Linneaeus (ed.). Ed. 13. 1: pars. 6.
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Gmelin, J. F.
1791
Vermes. In: Gmelin J.F. (Ed.) Caroli a Linnaei Systema Naturae per Regna Tria Naturae, Ed. 13. Tome 1(6). G.E. Beer, Lipsiae [Leipzig]. pp. 3021-3910
For publication dates of the parts: see Hopkinson J. (1908). Dates of publication of the separate parts of Gmelin's edition (13'th) of the Systema Naturae of Linnaeus. Proceedings of the Zoological Society of London (1907) 4: 1035-1037. https://www.biodiversitylibrary.org/page/31579506