00491    a2200133   4500020001500000082001500015100002500030245009300055260003800148300003100186650003300217999001300250952009400263  a8120500180  a622.23 CHE  aChernigouskii, A. A.  aApplication of Directional Blasting in Mining and Civil EngineeringcA. A. Chernigouskii  aNew Delhi :bOxonian Press,c1985  axx, 318p. :bill. ;c25 cm  aMining and civil Engineering  c959d959  00104070aNITbNITcCEd0000-00-00l0o622.23 CHEpNIT-132 r2017-01-05w2017-01-05yBK