Martins, L.M.V. Rumjanek, N.G. Neves, M.C.P. <br/><br/>
Diversity of cowpea nodulating rhizobia isolated from the semi-arid northeastern Region of Brazil 

<br/><br/><label>Subjects--Topical Terms: </label><br/>Feijao de Corda<br/>Nodulacao<br/>Rhizobium<br/>Regiao Semi-Arida<br/>Nordeste