Seasonal variation of soil chemical properties and C'O IND. 2' and C'H IND. 4' fluxes in unfertilized and P-fertilized pastures in an ultisol of the Brazilian Amazon - Fernandes, Silvana Aparecida Pavan; Bernoux, Martial; Cerri, Carlos Clemente; Feigl, Brigitte Josefine; Piccolo, Marisa de Cassia (Geoderma, 2002)