Bioraznolikost i simbiozna učinkovitost prirodnih populacija rizobija koje noduliraju grah (Phaseolus vulgaris L.) : doktorski rad = Biodiversity and symbiotic efficiency of indigenous rhizobial populations nodulating bean (Phaseolus vulgaris L.) : doctoral thesis - Rajnović, Ivana; Sikora, Sanja (2017)