Search Results for the EPA National Library Catalog

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Select Item	Title	Year Published
1	Ecology : from individuals to ecosystems /	2006
2	Ecology : individuals, populations, and communities /	1990
3	Ecology : individuals, populations, and communities /	1996
4	Greater Pittsburgh region: Structure contour map : of Allegheny, Armstrong, Beaver, Butler, Washington, and Westmoreland Counties /	1985
5	Hygiene Hogback natural area study /	1970
6	Oil and gas developments in Pennsylvania in 1978 /	1979
7	Oil and gas developments in Pennsylvania in 1987 /	1988
8	Oil and gas developments in Pennsylvania in 1988 /	1989
9	Oil and gas developments in Pennsylvania in 1989 /	1990
10	Oil and gas developments in Pennsylvania in 1990 : with ten-year review and forecast /	1992
11	Oil and gas developments in Pennsylvania in 1991 /	1993

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