1. Ground-water levels in the United States. Northwestern states [1960 - 1974]
2. Ground-water levels in the United States. South-central states [1959 - 1974]
3. Ground-water levels in the United States. Southeastern states [1958 - 1974]
4. Ground-water levels in the United States. Northeastern states [1957 - 1974]
5. Ground-water levels in the United States. North-central states [1956 - 1974]
11. Geohydrologic impacts of coal development in the Narragansett Basin, Massachusetts and Rhode Island [1979]
15. Application of digital modeling techniques to ground-water solute transport at Barstow, California [1978]
16. Calibration of a mathematical model of the Antelope Valley ground-water basin, California [1978]
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