<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/TG/1/15/306" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from Thomas Gold to PPG Industries Inc., One Gateway Center, Pittsburgh, Pennsylvania</dc:title>
  <dc:description>Asks how he might obtain a 1/4 inch Boro-silicate heat resistant clear glass, size 50 inches x 30 inches, and the approximate cost.</dc:description>
  <dc:date>18 September 1978</dc:date>
</rdf:Description>