1.
Canellas LP, EspĂ­ndola JAA, Guerra JGM, Teixeira MG, Velloso ACX, Rumjanek VM. Phosphorus analysis in soil under herbaceous perennial leguminous cover by nuclear magnetic spectroscopy. PAB. 2004;39(6):589-596. doi:10.1590/S1678-3921.pab2004.v39.6812