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Pennsylvania Bureau Of Water Supply And Wastewater Management : Relation between selected well-construction characteristics and occurrence of bacteria in private household-supply wells, south-central and southeastern Pennsylvania / by Tammy M. Zimmerman, Michele L. Zimmerman, and Bruce D. Lindsey ; in cooperation with the Pennsylvania Department of Environmental Protection, Bureau of Water Supply and Wastewater Management.
Pennsylvania Cable Network : World War II reflections : an oral history of Pennsylvania's veterans / [edited by] Brian Lockman ; with additional text by Dan Cupper ; introduction by Kenneth C. Wolensky.