Characterization of Rhizobial Bacteria Nodulating Astragalus corrugatus and Hippocrepis areolata in Tunisian Arid Soils Journal title: Polish Journal of Microbiology Authors: Mosbah Mahdhi, Nadia Houidheg, Neji Mahmoudi, Abdelhakim Msaadek, Mokhtar Rejili, Mohamed Mars Subject(s):