LEADER 01275nam 2200361I 450 001 9910707100903321 005 20180627140842.0 035 $a(CKB)5470000002460474 035 $a(OCoLC)1034010146 035 $a(EXLCZ)995470000002460474 100 $a20180504d1950 ua 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aImprovements in methods for preparing thin sections of rock /$fHarold L. Gibbs and LaMar G. Evans 210 1$a[Washington, D.C.] :$cUnited States Department of the Interior, Bureau of Mines,$d1950. 215 $a1 online resource (6 pages) $cillustrations 225 1 $aReport of investigations / United States Department of the Interior, Bureau of Mines ;$v4711 300 $a"June 1950." 320 $aIncludes bibliographical references. 606 $aThin sections (Geology) 615 0$aThin sections (Geology) 700 $aGibbs$b H. L$g(Harold L.),$01420604 702 $aEvans$b LaMar G. 712 02$aUnited States.$bBureau of Mines, 801 0$bGPO 801 1$bGPO 906 $aBOOK 912 $a9910707100903321 996 $aImprovements in methods for preparing thin sections of rock$93539130 997 $aUNINA