Percy L. Julian bei seinem Radio-Wien-Vortrag, 1931
Courtesy: Austrian National Library, ANNO | www.anno.onb.ac.at
Originator: Photo-Zentrale
16.4.1931
Radio Wien, 24.4.1931, S. 3 (http://anno.onb.ac.at/cgi-content/annoshow?call=raw|19310424|3|100.0|0)
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