%0 Journal Article %T Prevalence of Betaproteobacterial Sequences in nifH Gene Pools Associated with Roots of Modern Rice Cultivars %A Wu, Liqin %A Ma, Ke %A Lu, Yahai %J Microbial Ecology %V 57 %N 1 %P 58-68 %@ 0095-3628 %D 2008-06-12 %I Springer-Verlag %~ DeepDyve