000 003200000a22001330004500
008 140223b1956 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aHOD3 J6
082 _aHOD3 J6
100 _aCumming (J D)
245 _aDiamond drill hand book edn 2
260 _aToronto
_bJ K S
_c1956
650 _aGeology
999 _c30985
_d30985