LEADER 01452oam 2200445 450 001 9910711928403321 005 20190314080045.0 035 $a(CKB)5470000002488810 035 $a(OCoLC)1041735575 035 $a(OCoLC)995470000002488810 035 $a(EXLCZ)995470000002488810 100 $a20180622d1987 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aCore index $ea numerical core-logging procedure for estimating rock quality /$fby John R. Ege 210 1$a[Reston, Virginia] :$cDepartment of the Interior, U.S. Geological Survey,$d1987. 215 $a1 online resource (iii, 15 pages) $cillustrations 225 1 $aU.S. Geological Survey Circular ;$v954 300 $aTitle from title screen (viewed June 22, 2018) 300 $a"Procedures to be followed for rapid characterization of rock quality." 320 $aIncludes bibliographical references (page 15). 517 $aCore index 606 $aDrill core analysis 606 $aDrill core analysis$2fast 615 0$aDrill core analysis. 615 7$aDrill core analysis. 700 $aEge$b John R.$01386675 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910711928403321 996 $aCore index$93545044 997 $aUNINA