Logos on Everest: Commercial Sponsorship of American Expeditions, 1950–2000 | Enterprise & Society | Cambridge Core
A type catalogue of the reed frogs (Amphibia, Anura, Hyperoliidae) in the collection of the Museum für Naturkunde Berlin (ZMB) with comments on historical collectors and expeditions
Catalogue Bauer
BAUER Katalog 2016
Christian wagner hi-res stock photography and images - Alamy