Flint clay is kaolinitic mudstone that distinctively differs from widely known shale in lithology, genesis, and economic uses.http://www.runjinrefractories.com/
Suka
Komentar
Membagikan
Flint clay is kaolinitic mudstone that distinctively differs from widely known shale in lithology, genesis, and economic uses.http://www.runjinrefractories.com/