00674nam a2200229 a 450000100060000000300080000600500170001400800410003102000150007203500190008704000320010604100080013808200220014610000330016824500480020125000380024926000320028730000380031950400290035765000240038670000340041074955BD-RjUL20211209082627.0181226s1964    nyuab    b    001 0 eng    a0471533319  a(BD-RjUL)75173  aDLCcDLCdDLCdBD-RjULbeng  aeng00223a622bLEE 19641 aLewis, Robert Strong,d1882-10aElements of mining /c[by] Robert S. Lewis.  a3d ed. rev.,bby George B. Clark.  aNew York:bJ. Wiley,cc1964  axi, 768 p.billus., maps.c24 cm.  aIncludes bibliographies. 0aMining engineering.1 aClark, George Bromley,d1912-