LEADER 00558nam  2200157z- 450 
001 9910712881303321
035   $a(CKB)5470000002497367
035   $a(EXLCZ)995470000002497367
100   $a20230509c1976uuuu  -u-            -
101 0 $aeng
200 10$aOperation and maintenance of a deep-well water-level measurement device, the Iron Horse
210   $aDenver, Colorado?$cU.S. Geological Survey
906   $aBOOK
912   $a9910712881303321
996   $aOperation and maintenance of a deep-well water-level measurement device, the Iron Horse$93303993
997   $aUNINA