Distribution and efficiency of Rhizobium leguminosarum strains nodulating Phaseolus vulgaris in Northern Spanish soils: Selection of native strains that replace conventional N fertilization

1. Mulas, D.
2. García-Fraile, P.
3. Carro, L.
4. Ramírez-Bahena, M.-H.
5. Casquero, P.
6. Velázquez, E.
7. González-Andrés, F.