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1867, 1868, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 1880, and 1881. Gräf, A. (Adolf), active 1855-1878 and Stanford Geospatial Center. This layer is a georeferenced raster image of an historic continental map of Africa created by Adolf Gräf, and published by the Georgraphisches Ins... 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. 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.
2007. World Wildlife Fund. This raster layer is a void-filled digital elevation model (DEM) of Africa at 15 arc-seconds resolution. Elevation is expressed in meters and refer... U.S. Geological Survey.
2007. World Wildlife Fund (WWF). This raster layer is a void-filled digital elevation model (DEM) of Africa at 30 arc-seconds resolution. Elevations is in meters referenced to the ... U.S. Geological Survey.
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.
2000. This raster dataset represents the average yield for agave crops in tons per hectare. Croplands cover ~15 million km2 of the planet and provide the... University of Minnesota. Institute on the Environment.
2000. This raster dataset represents the agricultural census data quality for agave crop yields. Data quality categories include (0= missing, 0.25= count... University of Minnesota. Institute on the Environment.