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Mathematics manual for water and wastewater treatment plant operators / Frank R. Spellman.
- 628.10151 S743
- Spellman, Frank R.
- CRC Press,
- c2004.
- Boca Raton, Fla. :
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Environmental impacts of hydraulic fracturing / Frank R. Spellman.
- 333.82314 S743
- Spellman, Frank R.
- CRC Press,
- c2013.
- Boca Raton, FL :