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91. Arctic Ice Chart, September 2, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 2, 1971. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

92. Arctic Ice Chart, September 21, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 21, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

93. Arctic Ice Chart, September 23, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 23, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

94. Arctic Ice Chart, September 28, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 28, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).

95. Arctic Ice Chart, September 7, 1971

1971. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for September 7, 1971. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).

96. Burghs and Districts of Scotland, 1971

1971. Southall, Humphrey, Aucott, Paula, Bennett, Chris, University of Portsmouth, Southall, Humphrey, Aucott, Paula, Bennett, Chris, University of Portsmouth, and Great Britain Historical Geographical Information System. These are digital boundaries for the system of burghs and districts of county essentially created by the Local Government (Scotland) Act 1929 and c... University of Portsmouth.

97. Civil Parishes of England and Wales, 1971

1971. Southall, Humphrey, Aucott, Paula, Bennett, Chris, University of Portsmouth, and Great Britain Historical Geographical Information System. These are digital boundaries for the system of Civil Parishes which was and is the most detailed level of local administration in England and Wales... University of Portsmouth.

98. District Boundaries of India, 1971

1971. ML InfoMap (Firm). This layer is a polygon theme representing district boundaries of India for 1971 and includes district socio-demographic Census attribute data such... ML InfoMap (Firm).

99. Local Government Districts of England and Wales, 1971

1971. Southall, Humphrey, Aucott, Paula, Bennett, Chris, University of Portsmouth, and Great Britain Historical Geographical Information System. These are digital boundaries for the system of districts essentially created by the 1894 Local Government Act and continuing to exist until 1974. E... University of Portsmouth.

100. Nonattainment Areas for Carbon Monoxide Pollution: United States and Territories, 1971

1971. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the carbon mono... United States. Bureau of Transportation Statistics.