<Ul> <Li> 1761--Johan Gottschalk Wallerius (plant decomposition) </Li> <Li> 1763--Mikhail Lomonosov (plant and animal decomposition) </Li> <Li> 1799--Peter Simon Pallas (reeds marsh) </Li> <Li> 1835--Charles Lyell (loess) </Li> <Li> 1840--Sir Roderick Murchison (weathered from Jurassic marine shales) </Li> <Li> 1850--Karl Eichwald (peat) </Li> <Li> 1851--А . Petzgold (swamps) </Li> <Li> 1852--Nikifor Borisyak (peat) </Li> <Li> 1853--Vangengeim von Qualen (silt from northern swamps) </Li> <Li> 1862--Rudolf Ludwig (bog on place of forests) </Li> <Li> 1866--Franz Josef Ruprecht (decomposed steppe grasses) </Li> <Li> 1879--First chernozem papers translated from Russian </Li> <Li> 1883--Vasily Dokuchaev published book "Russian Chernozem" with complete study of this soil in European part of Russia . </Li> <Li> 1929--Otto Schlüter (man - made) </Li> <Li> 1999--Michael W.I Schmidt (ancient biomass burning) </Li> </Ul> <Li> 1761--Johan Gottschalk Wallerius (plant decomposition) </Li> <Li> 1763--Mikhail Lomonosov (plant and animal decomposition) </Li> <Li> 1799--Peter Simon Pallas (reeds marsh) </Li>

Where is the richest soil in the world