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You searched for: Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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68.
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Aggregate Resources 1997, 2020 and 2040: Minnesota minnesota

1997-2040. The Aggregate Resources (sand, gravel and limestone and dolomite) dataset contains three separate shape files for aggregate resources for 1997, 202...

73.

Agriculture Census: Indiana purdue

1997. United States Geological Survey and Bernardin-Lochmueller & Associates. USGS National Atlas metadata states "This data set portrays the National Agricultural Statistics Service, U.S. Department of Agriculture's 1997 Ce...

74.

Airdevronsix Icefalls: Antarctica minnesota

1987. Jean-Claude M. Thomas. Projection: Lambert Conformal Conic Projection - Standard Parallels -76°40' and -79°20'; Series: USGS Satellite Image Maps.

76.
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Airports: Centre County, Pennsylvania penn-state

1995. Centre County Government. Point Feature Class - It was originally captured as part of the 1995 Aerial Imagery project completed by Kimball.

79.

Alexandra Mountains: Antarctica minnesota

1969. Projection: Lambert Conformal Conic Projection: Standard Parallels -76°40' and -79°20'; Series: USGS 1:250,000 Topographic Reconnaissance Series.

80.

Alexandra Mountains: Antarctica minnesota

1977. Wade; Cathey; Oldham. Projection: Lambert Conformal Conic Projection: Standard Parallels -76°40' and -79°20'; Series: USGS 1:250,000 Geologic Reconnaissance Series.