[THE FERTILITY IN ITS RELATIONS WITH HUMUS AND CONSERVATION OF SOILS].
D005298:Fertility; D005308:Fertilizers; D006863:Hydrogen-Ion Concentration; D012987:Soil; D012988:Soil Microbiology
D005308:Fertilizers; D012987:Soil
FERTILIZERS; HYDROGEN-ION CONCENTRATION; SOIL; SOIL MICROBIOLOGY
LA FERTILITE DANS SES RAPPORTS AVEC L'HUMIFICATION ET LA CONSERVATION DES SOLS.