By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / type / wheat / areas / area and 123 more

By Gannett, Henry, 1846-1914 . Genre United States / Area . Names areas / area / included / sea / california and 52 more

By Waugh, F. A. (Frank Albert), 1869-1943 . Genre n-us--- / Forest reserves / United States / Landscape gardening . Names areas / life / order / area / roots and 52 more

By Wheeler, George M. (George Montague), 1842-1905 / Humphreys, A. A. (Andrew Atkinson), 1810-1883 / Wright, Horatio Gouverneur, 1820-1899 . Genre n-us--- / United States / Surveys / United States / Discovery and exploration and 2 more . Names arizona / mexico / mus / insects / plasmid r and 12696 more

By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / type / areas / area / grass and 104 more

Genre n-us--- / Forests and forestry / United States . Names wood / area / american / areas / california and 285 more

By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / type / areas / area / plants and 46 more

Genre n-us--- / Forest reserves / Forests and forestry / United States . Names area / order / areas / wood / miscellaneous and 200 more

By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / type / areas / area / grass and 103 more

By Bonsteel, Jay Allan. . Genre Soils / United States . Names soil / sassafras / type / delaware / area and 134 more