Template:Eichwald, 1840a

• Eichwald, K.E. 1840. O silurijskoj sisteme plastov v Estljandii [On the Silurian system of layers in Estland]. Zhurnal vrachebnykh i yestestvennykh nauk 1: 1–243. [in Russian]  
  • Find all Wikispecies pages which cite this reference.