Isolation and testing of Rhizobium meliloti strains for alfalfa production in Georgia soils / Autor Dala R. Pradhan. -- Athens : University of Georgia, 1990. -- 12 s. : 6 tab. -- (Research Bulletin 395). -- ISSN 0072-128X. lucerna siata * Rhizobium meliloti * baktérie pôdne