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    <meta content='Draw architectural forms by Rafael Guastavino' name='description'/>
    <meta content='Don Brutzman' name='creator'/>
    <meta content='9 November 2013' name='created'/>
    <meta content='20 October 2019' name='modified'/>
    <meta content='TODO lecture pdf' name='reference'/>
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    <meta content='https://en.wikipedia.org/wiki/Guastavino_tile' name='reference'/>
    <meta content='https://en.wikipedia.org/wiki/Catalan_vault' name='reference'/>
    <meta content='http://architecture.mit.edu/class/guastavino/news.html' name='reference'/>
    <meta content='http://block.arch.ethz.ch' name='reference'/>
    <meta content='http://architecture.mit.edu/class/guastavino/features/lisa/mroszczyk%20thesis.pdf' name='reference'/>
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