TY - SER AU - Rodrigues,J.L.M. AU - Melloto,M. AU - Silveira,J.A.G.da TI - Nodulin activities, hydrogenase expression and nitrogen fixation in cowpea inoculated with Hup+ and Hup-symbionts KW - Nodulo KW - Hidrogenacao KW - Feijao de Corda ER -