1990. This polygon shapefile contains ice observations in the Arctic region for June 25, 1990. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1978. 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 lead (Pb) 3... United States. Bureau of Transportation Statistics.
1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, and 2009. International Heat Flow Commission, International Association of Seismology and Physics of the Earth's Interior, and Oklahoma State University. Department of Geography. Cartography Service. This point shapefile contains heat flow data for Norway compiled from sources dating from 1974 to 2009. Heat flow is a measure of heat loss across ... International Heat Flow Commission.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.
Sudan, Meteorological Service. and Sudan, Maṣlaḥat al-Misāḥah. prepared by Sudan Meteorological Service. Topo. No. S. 911. Sudan Survey Dept.