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...
Selective annotated bibliography of grou...
Summary of the San Juan structural basin...
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...