V. On the Butterflies of Bulgaria
Elwes, Henry John, 1846-1922
Article
1900
Transactions of the Entomological Society of London
48
183--206
BioStor
English
London, The Society,
BioStor: https://biostor.org/reference/50834 DOI: https://doi.org/10.1111/j.1365-2311.1900.tb02378.x