00360    a2200109   4500020001500000082001500015100002500030245009300055260003800148300003100186650003300217  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