De Silva, R.S.Y.2015-03-192015-03-19https://dl.nsf.gov.lk/handle/1/17947Biological sciencesMicrobiologyStudies on Nitrogen Fixing Blue-Green Algae in Rice Soils of Central Sri LankaThesisUniversity of PeradeniyaRG/74/026FR 0576 TM.Sc.