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- From landfill gas to energy [electronic resource] : technologies and challenges / Vasudevan Rajaram, Faisal Zia Siddiqui, and M. Emran Khan. . Leiden, The Netherlands : CRC/Balkema, c2012. . 1 online resource.
- The Praeger handbook of environmental health [electronic resource] / edited by Robert H. Friis. . Santa Barbara, Calif. : Praeger, c2012. . 1 online resource (4 v.)