by Gary W. Levings
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Selected hydrogeologic data for the Big ...
Selected hydrogeologic data from the nor...
Preliminary appraisal of ground water in...
Selected drill-stem-test data from the n...
Selective annotated bibliography of grou...
Water resources in the Sedona Area, Yava...
Nightmares & Dreamscapes
Doyle Drive
Water-quality assessment of part of the ...
Water-level changes in the High Plains A...
Particle-tracking analysis of contributi...
Aquifer-system compaction and land subsi...