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71. Hazardous Waste, Generated, Shipped, Received 2001-2007

Stanford University Public content
2011. National Atlas of the United States. This polygon shapefile portrays the hazardous waste generated, shipped, and received by state and other areas within the United States, Puerto Rico... National Atlas of the United States.

72. Illinois-Iowa, Edgington quadrangle : topography

University Of Illinois Urbana Champaign Public content
1916. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.)|State Geological Survey (Urbana, Ill.).

73. Illinois-Iowa Galena quadrangle : topography

University Of Illinois Urbana Champaign Public content
1913. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed 1909 and 1911.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot hei... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).

74. Illinois-Iowa, Lomax quadrangle

University Of Illinois Urbana Champaign Public content
1937. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1931-1932";Reli... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).

75. Illinois-Iowa, Milan quadrangle : topography.

University Of Illinois Urbana Champaign Public content
1912. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1910.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).

76. Impact Structure Locations: Geology of the Conterminous United States, 2005

Stanford University Public content
2005. King, Philip B., Arndt, Raymond E., Schruben, Paul G., Bawiec, Walter J., and Beikman, Helen M. This point shapefile shows the locations of impact structures in the United States. An impact structure is a crater formed by the impact of a meteo... Geological Survey (U.S.).

77. Indian Lands of the United States, 2006

Stanford University Public content
2006. National Atlas of the United States. This polygon shapefile shows Indian lands of the United States. Only areas of 640 acres or more are included. Federally-administered lands within a... National Atlas of the United States.

78. Iowa-Illinois, Burlington quadrangle : topography

University Of Illinois Urbana Champaign Public content
1940. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.;"Surveyed in 1934.";Relief shown by contours and spot ... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).

79. Iowa-Illinois, Davenport sheet : reconnaissance map

University Of Illinois Urbana Champaign Public content
1927. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1889.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).

80. Iowa-Illinois, East Dubuque quadrangle

University Of Illinois Urbana Champaign Public content
1940. Geological Survey (U.S.). Surveyed in 1935;Contour interval 20 feet.;Relief shown by contours and spot heights.;1 map, colored;46 x 34 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).