SHIVASHANKAR, GGANESHAIAH, K N2019-07-262019-07-261983No. of References 192http://krishikosh.egranth.ac.in/handle/1/5810117237ABSTRACT NOT AVAILABLEennullHOST-GENOTYPIC VARIATION FOR SYMBIOTIC NITROGEN FIXATION IN COWPEA [Vigna unguiculata (L.) Walp]Thesis