Centro Vasco de Arquitectura
Euskal Herriko Arkitektura Ikerkundea
INTERNET http://books.google.es/books/about/Macmillan_encyclopedia_of_architects.html?hl=es&id=d4lUAAAAMAAJ
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INTERNET http://files.hanser.de/zsolnay/pics/3-552-04965-7_2542713643-1126.jpg
http://www.univie.ac.at/geschichtegesichtet/2010/images/2010/placzek.jpg
INTERNET http://preservationalumni.org/Resources/Pictures/Adolf_Placzek.jpg
INTERNET http://www.zipworld.com.au/~lnbdds/home/placzek.htm
INTERNET http://109.123.214.108/ca_media/139478/preview.jpg?1346732741
INTERNET http://109.123.214.108/ca_media/139479/preview.jpg?1346732742