A description of the German River-frog (Rana esculenta, var. ridibunda, Pallas)
Boulenger, George Albert 1858-1937
Article
1885
Proceedings of the Zoological Society of London
666--671
BioStor
English
London Academic Press, [etc.] 1833-1965
BioStor: https://biostor.org/reference/51821
Download MODS