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2011. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts the suitability layer developed for use with Marxan estimates of ecological integrity to identify areas that are bes... Bay Area Open Space Council.
2007. Map Maker Ltd. This line shapefile contains constituency boundaries for Malawi as of January 2007. These are the level 3 administrative units (ADM3) for Malawi. T... Map Maker Ltd.
2007. Map Maker Ltd. This polygon shapefile contains constituency boundaries for Malawi as of January 2007. These are the level 3 administrative units (ADM3) for Malawi... Map Maker Ltd.
2007. Map Maker Ltd. This polygon shapefile contains constituency boundaries for Namibia as of January 2007. These are the level 2 administrative units (ADM2) for Namib... Map Maker Ltd.
2007. Map Maker Ltd. This line shapefile contains constituency boundaries for Namibia as of January 2007. These are the level 2 administrative units (ADM2) for Namibia.... Map Maker Ltd.
2003. Geological Survey (U.S.) Minerals Information Team. This point shapefile represents construction minerals operations in the United States. The data represent commodities covered by the Minerals Infor... National Atlas of the United States.
1940, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 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, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, and 2000. California Geological Survey, California. Department of Conservation, Marshall, Gerald, and Mendes, Eric. This line shapefile depicts contacts and faults within the Elk River watershed in Humboldt County, California. This dataset is the product of the D... California Geological Survey.
1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, and 2002. California Geological Survey. This line shapefile depicts contacts and faults within the Albion River watershed in Mendocino County, California. These data were mapped at a 1:24... California Geological Survey.
2002. National Atlas of the United States. This line shapefile represents the Continental Divide of the United States. The map layer was created by extracting Hydrologic Unit Boundary line f... National Atlas of the United States.
1982, 1983, 1984, 1985, 1986, 1987, 1988, and 1989. Geological Survey (U.S.). This polygon shapefile contains sediment grain size distributions for the east coast continental margin of the United States Atlantic coast, Sedime... Coastal and Marine Geology Program (Geological Survey). Woods Hole Field Center.