Graphite Products: Difference between revisions
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[[Image:Im1926EYB-Graph.jpg|thumb| 1926. Foliac. ]] | [[Image:Im1926EYB-Graph.jpg|thumb| 1926. Foliac. ]] | ||
[[Image:Im19280501PD-Graph.jpg|thumb| May 1928. Foliac. ]] | [[Image:Im19280501PD-Graph.jpg|thumb| May 1928. Foliac. ]] | ||
[[Image:Im19291206Eng-Graphite.jpg|thumb| December 1929. ]] | |||
[[Image:Im1943EYB-Graphite.jpg|thumb| 1943 ]] | [[Image:Im1943EYB-Graphite.jpg|thumb| 1943 ]] | ||