00331nam a2200121Ia 4500008004100000041000800041082001400049100002100063245004700084250001200131260004400143650002200187230711s9999||||xx |||||||||||||| ||und||  aENG  a624bRO-R  aRossmanith,H. P. 0aRock fragmentation by blasting fragblast-4  a1st Ed.  c1993aNew DelhibA A Balkema Publishers  aCivil Engineering