Revision history of "Chalk Crushed"

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  • (cur | prev) 16:17, 22 June 2015Wikiadmin (talk | contribs). . (1,663 bytes) (+1,663). . (Created page with "== Description == Chalk is a soft, white, porous sedimentary carbonate rock, a form of limestone composed of the mineral calcite. thumb|caption *Bulk mater...")