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User talk:Per1234: Revision history


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9 October 2012

8 October 2012

3 October 2012

2 October 2012

  • curprev 17:3217:32, 2 October 2012Markdarrly talk contribs 686 bytes +686 Created page with 'I work at a college that has a glass department and you are correct that BN is used mainly as a mold release for kiln form glass, (we use it on pre-heated metal ...'