2002. Central Arizona Project (U.S.). A polyline depicting the approximate location of the Central Arizona Project Aqueduct from start at the diversion point on the Colorado river throu... Central Arizona Project (U.S.).
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2000. Arizona. Department of Health Services. Depiction of the incidence rate of Chlamydia in Arizona in 2000 by county. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
1992. This data set consists of the county boundaries for the State of Arizona which were extracted from the 1992 U.S. Census Bureau's TIGER line files. United States Census Bureau.
1930. University of Arizona. Library. Statewide coverage of 1930 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
1940. University of Arizona. Library. Statewide coverage of 1940 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
1950. University of Arizona. Library. Statewide coverage of 1950 Census County Subdivisions. University of Arizona.
1960. University of Arizona. Library. Statewide coverage of 1960 Census County Subdivisions. University of Arizona.
1970. University of Arizona. Library. Statewide coverage of 1970 Census County Subdivisions. University of Arizona.
1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, and 1990. This element was computed using snowfall data from the National Climatic Data Center's United States Climatology database. The extreme date is the ... National Oceanic and Atmospheric Administration.
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.).