Shivappa Shetty, KTilak, Minakshisundaram2019-08-212019-08-211995No. of references 176http://krishikosh.egranth.ac.in/handle/1/5810122752ABSTRACT NOT AVAILABLEennullTHE ROLE OF ASSOCIATIVE CYANOBACTERIA IN NITROGEN FIXATION BY Azolla spp.Thesis