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2007. World Wildlife Fund (WWF). This drainage direction map for Africa defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.
2007. World Wildlife Fund (WWF). This drainage direction map for Africa defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.
2007. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
2007. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.
1806. Barlow, sculp. and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa from 1806 titled "Africa form the latest authorities." This map... Stanford Digital Repository.
1828. Arrowsmith, Samuel, -1839 and Stanford Geospatial Center. This layer is a georeferenced image of an historic continental map of Africa from 1828. The southeast coast is marked 'Sterile Coast.' The Portugue... Stanford Digital Repository.
1880. Tallis, John, 1817-1876, Stanford Geospatial Center, and Rapkin, J. This layer is a georeferenced raster image of an historic paper map of Africa. This is a continental map of Africa originally created and published... Stanford Digital Repository.
1809. Russell, John, fl. 1733-1795 and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa from 1809. This map was originally created by John Russell. All... Stanford Digital Repository.
1853. Stabilimento di Giuseppe Civelli and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa from 1853, originally created by Stabilimento di Giuseppe Civel... Stanford Digital Repository.
1801, 1802, 1803, 1804, 1805, 1806, 1807, 1808, 1809, 1810, 1811, 1812, 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1820, 1821, 1822, 1823, 1824, 1825, 1826, 1827, 1828, 1829, 1830, 1831, 1832, 1833, 1834, 1835, 1836, 1837, 1838, 1839, 1840, 1841, 1842, 1843, 1844, 1845, 1846, 1847, 1848, 1849, 1850, 1851, 1852, 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1860, 1861, 1862, 1863, 1864, 1865, 1866, 1867, 1868, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 1880, 1881, 1882, 1883, 1884, 1885, 1886, 1887, 1888, 1889, 1890, 1891, 1892, 1893, 1894, 1895, 1896, 1897, 1898, 1899, and 1900. Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa from the 19th century. All map collar and inset information is ... Stanford Digital Repository.