Analysis of information sources in references of the Wikipedia article "Common toad" in English language version.
Wieland and Alles isolated bufotoxin from the skin of B. vulgaris or B. bufo bufo.
Wieland and Alles isolated bufotoxin from the skin of B. vulgaris or B. bufo bufo.
Wieland and Alles isolated bufotoxin from the skin of B. vulgaris or B. bufo bufo.