<http://schema.org/description>
"3 diagrams showing the tests undertaken to establish which material, Roman or Portland cement, would provide the stronger &amp;amp;#39;hollow&amp;amp;#39; bricks for use in the exhibition beams."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mediastorehouse.com/crystal-palcebrick-beam/print/4380117.html>