00435nam a22001451a 450000100060000000300040000600500170001000800410002708200180006810000210008624500670010726400450017430000110021965000590023018004OSt20260204212345.0170213s1969||||xx ||||||b||||||||||eng||  a445.442 B195g  aL. Bates, Robert  aGeology of the industrial rocks and minerals / Robert L. Bates  aSin lugar, desconocido o indeterminado :  a459 p.  a1. GEOLOGÍA DE LAS ROCAS Y MINERALES INDUSTRIALESÌ