A Contribution to the Knowledge of the Races of Rana esculent a and their Geographical Distribution
Boulenger, George Albert 1858-1937
Article
1891
Proceedings of the Zoological Society of London
374--384
BioStor
English
London Academic Press, [etc.] 1833-1965
BioStor: https://biostor.org/reference/108091 DOI: https://doi.org/10.1111/j.1096-3642.1891.tb01762.x