INTERNET
http://www.amazon.de/Baukunst-neuesten-Gustav-Adolf-Platz/dp/3786123047

Portada del libro

http://www.amazon.co.uk/Baukunst-neuesten-Gustav-Adolf-Platz/dp/B0017DPK0Y

INTERNET
http://www.stoutbooks.com/cgi-bin/stoutbooks.cgi/25371