Narula, NeeruBhatia, Ranjana2017-06-032017-06-032005http://krishikosh.egranth.ac.in/handle/1/5810014823en-USAzotobacter,Diversity, BIOLOG, ARDRA, nifH, CottonBiochemical And Molecular Diversity Among Azotobacter Spp. Under Cotton-Wheat Cropping SystemThesis