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You searched for: Time Period 1950-1999 Remove constraint Time Period: 1950-1999
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purdue

73. Agriculture Census: Indiana

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...
minnesota

74. Airdevronsix Icefalls: Antarctica

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

76. Airports: Centre County, Pennsylvania

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

79. Alexandra Mountains: Antarctica

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

80. Alexandra Mountains: Antarctica

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