Biological processes and soil fertility; proceedings of the Meeting of Commissions III and IV of the International Society of Soil Science jointly with the British Society of Soil Science, Reading, July 1983

biologie du sol biomasa biomass biomasse denitrification estructura del suelo fertilidad del suelo fixation de l'azote fumigation microorganisme microorganismos microorganisms nitrogen fixation organic matter soil biology soil fertility soil micromorphological features soil structure structure du sol substance toxique toxic substances trait micromorphologique du sol