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


	Titlepages of Ahl (1931a) “Mitteilungen…” and Ahl (1931b) “Das Tierreich” with printed dates of publication at the bottom and receipt stamps of the zoological library at ZMB with date of availability at the upper edge; compare text.

Part of: Tillack F, de Ruiter R, Rödel M-O (2021) 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. Zoosystematics and Evolution 97(2): 407-450. https://doi.org/10.3897/zse.97.68000