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1. Administrative Counties of England and Wales, 1961

1961. Southall, Humphrey, Aucott, Paula, Bennett, Chris, and University of Portsmouth. These are digital boundaries for the system of counties essentially created by the 1889 Local Government Act and continuing to exist until 1974. Th... University of Portsmouth.

2. Annual Mean Daily Average Temperature, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

3. Annual Mean Daily Maximum Temperature, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

4. Annual Mean Daily Minimum Temperature, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

5. Annual Mean Daily Temperature Range, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

6. Annual Mean Dew Point Temperature, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Surface Airways Hourly (TD-3280) database (NOAA, 2000a). The original... National Climatic Data Center (U.S.).

7. Annual Mean Length of Freeze-Free Period, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).

8. Annual Mean Maximum Daily Snowfall, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 1999c). The... National Climatic Data Center (U.S.).

9. Annual Mean Number of Days with Measurable Precip., Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).

10. Annual Mean Number of Days with Temp 90 Deg F, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).

11. Annual Mean Number of Days with Temp. less than 32 Deg F, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).

12. Annual Mean Relative Humidity, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's Surface Airways Hourly (TD-3280) database (NOAA, 2000a). The original... National Climatic Data Center (U.S.).

13. Annual Mean Total Heating Degree Days, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

14. Annual Mean Total Precipitation, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).

15. Annual Mean Total Snowfall, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 1999c). The... National Climatic Data Center (U.S.).

16. Annual Median Length of Freeze-Free Period, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).

17. Burghs and Districts of Scotland, 1961

1961. 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.

18. China county map, 1961

1961. All China Marketing Research Co., Ltd. Map of administrative divisions in China, at the county level and above, for the year 1961.

19. Civil Parishes of England and Wales, 1961

1961. 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.

20. Date of Extreme Latest Snowfall, Arizona, 1961-1990

1961. National Climatic Data Center (U.S.). This element was computed using snowfall data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 19... National Climatic Data Center (U.S.).