http://ir.lib.ruh.ac.lk/handle/iruor/17818 MAT221β 2026-05-09T23:01:24Z http://ir.lib.ruh.ac.lk/handle/iruor/10011 MAT 221β - Number Theory Science 2022-06-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/4054 MPM 2213 and MAT 221B ( Beta ) - Number Theory Department of Mathematics 2019-03-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/2349 MAT 221B - Number Theory Department of Mathematics, Faculty of Science 2018-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/2136 MPM2213 /MAT221B -Number Theory Department of Mathematics, Faculty of Science 2016-11-01T00:00:00Z