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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. Hall, Sydney and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic regional map of Southern Africa originally engraved by Sidney Hall in the 19th century. A... Stanford Digital Repository.
1858. Swanston, George H. and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa created in 1860. Originally created by George Swanton, this map... Stanford Digital Repository.
1809. Lapie, M. (Pierre), 1779-1850 and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic regional map of Southern Africa originally created by Pierre Lapie in 1809. All map colla... Stanford Digital Repository.
1891. Migeon, J. and Stanford Geospatial Center. This layer is a georeferenced raster image of a continental map of Africa titled 'Afrique Physique,' originally created by J. Migeon in 1891. The m... Stanford Digital Repository.
1840. Levasseur, V. (Victor), Stanford Geospatial Center, Bonheur, Raimond, and Laguillermie, active 1830-1854. This layer is a georeferenced image of an historic continental map of Africa from 1840. Originally created by Victor Levasseur, this map depicts la... Stanford Digital Repository.
1840. Stanford Geospatial Center and J. & C. Walker (Firm). This layer is a georeferenced raster image of an historic regional map of Nothern Africa from 1840. The original map was engraved by J. & C. Wa... Stanford Digital Repository.
2007. World Wildlife Fund (WWF). This drainage direction map for Asia defines the direction of flow from each cell in the conditioned digital elevation model to its steepest downsl... 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.
2008. World Wildlife Fund (WWF). This drainage direction map for Australasia defines the direction of flow from each cell in the conditioned digital elevation model to its steepest... U.S. Geological Survey.