Google Directory - Regional > North America > United States > Ohio > Counties > Mercer

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	Mercer County Environmental Data - http://mercer.osu.edu/ Environmental information for developers.
	Water Resources of Mercer County - http://ohioline.osu.edu/aex-fact/0480_54.html Factsheet providing information on water resources and drinking-water quality in the county.
	Mercer County Ground-Water Resources - http://ohioline.osu.edu/aex-fact/0490_54.html Factsheet providing information on ground-water resources in the county.
	Butterflies of Mercer County - http://www.butterfliesandmoths.org/map?dc=152&_dcc=1&si=36 Presents photos and species accounts of butterflies found within the county.

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