Lal, Rattan2019-08-282019-08-282009Lal, Rattan. Challenges and opportunities in soil organic matter research / Rattan Lal // European Journal of Soil Science. – 2009. – Vol. 60. – Nr. 2. – P. 158-169.enAttribution-NonCommercial-NoDerivatives 4.0 InternationalPedologieDegradarea soluluiSoluriChallenges and opportunities in soil organic matter researchOther