Online Books by
Ralph O. Patt
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Patt, Ralph O.: Characterization of nitrogen sources contaminating shallow ground water in an arid basin, Las Vegas area, Nevada / (Las Vegas, Nev. : Water Resources Center, Desert Research Institute, University of Nevada System, 1976), also by J. W. Hess (page images at HathiTrust; US access only)- Patt, Ralph O.: Las Vegas Valley water budget : relationship of distribution, consumptive use, and recharge of shallow ground water / (Ada, Okla. : Environmental Protection Agency, Office of Research and Development, Robert S. Kerr Environmental Research Laboratory ; Springfield, Va. : For sale by the National Technical Information Service, 1978), also by Robert S. Kerr Environmental Research Laboratory (page images at HathiTrust)
- Patt, Ralph O.: Las Vegas Valley water budget : relationship of distribution, consumptive use, and recharge of shallow water / (Ada, Okla. : Environmental Protection Agency, Office of Research and Development, Robert S. Kerr Environmental Research Laboratory ; Springfield, Va. : for sale by the National Technical Information Service, 1978), also by Robert S. Kerr Environmental Research Laboratory (page images at HathiTrust)
- Patt, Ralph O.: Nitrogen contamination sources in shallow ground water, Las Vegas area, Nevada / (Las Vegas : Water Resources Center, Desert Research Institute, University of Nevada System, 1977), also by J. W. Hess (page images at HathiTrust; US access only)
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