Newspaper article about the radio lecture of Percy Julian, Neues Wiener Journal 1931
Neues Wiener Journal, 17.4.1931, S. 7 (http://anno.onb.ac.at/cgi-content/annoshow?call=nwj|19310417|7|100.0|0)
Newspaper article about the radio lecture of Percy Julian, Neues Wiener Journal 1931