THE GROUP COMPOSITION OF HUMUS AND FRACTIONS OF FINE-DISPERSED PHASE IN THE SODDY-PODZOLIC MEDIUM-LOAMY SOIL IN A LONG-TERM EXPERIMENT
Bûlletenʹ Počvennogo instituta imeni V.V. Dokučaeva/Bûlletenʹ Počvennogo instituta im. V.V. Dokučaeva