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You searched for: Place United States of America Remove constraint Place: United States of America Time Period 1950-1999 Remove constraint Time Period: 1950-1999

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2.

National Land Cover Dataset 1992 - Pennsylvania; Albers Grid pennsylvania-state-university

1999. United States Geological Survey (USGS). These data can be used in a geographic information system (GIS) for any number of purposes such as assessing wildlife habitat, water quality, pesti... State of Pennsylvania.

3.

North American Breeding Bird Survey Routes pennsylvania-state-university

1966. Canadian Wildlife Service U.S. Fish and Wildlife Service U.S. Department of the Interior; now at USGS Patuxent Wildlife Research Center. The North American Breeding Bird Survey (BBS), which is coordinated by the Biological Resources Division and Canadian Wildlife Service, is a primar... State of Pennsylvania.