Autymn D. C.
2006-12-12 03:55:45 UTC
<http://groups.google.com/group/sci.materials/browse_frm/thread/a7883b76924c6edd/16cc48de5a6fa92f?#16cc48de5a6fa92f>
Come on, new knowledh, anyone--Mohs, Knoop, Vickers, Brinell...
Come on, new knowledh, anyone--Mohs, Knoop, Vickers, Brinell...