(PDF) BUILDING STONES
Яг одоо бидэнтэй нэгдээрэй2016-11-1 · 4 May 2016 Prof. Dr. H. Z. Harraz Presentat ion Building Stones 9. Building Stones may be: i) Crushed rock (or Aggregate Stone): Natural aggregate (crushed. stone, sand, and gravel) is the most ...