TY  - SER
AU  - Sa,N.M.H.de
AU  - Marriel,I.E.
AU  - Franco,A.A.
TI  - Variability in individual nodule activity of single strains of Rhizobium etli and Rhizobium tropici in symbiosis with Phaseolus vulgaris
KW  - Feijao
KW  - Rhizobium
KW  - Estirpe
KW  - Simbiose
KW  - Nodulo
ER  -