000 00345 a2200133 4500
082 _a512.72
_bOPE
090 _c8263
_d11438
100 _aThe Open University of Sri Lanka
245 _aAlgebra
_bunit 1
_belementary number theory
260 _aNawala
_bThe Open University of Sri Lanka
300 _a137p.
_c28cm
650 _aAlgebra
942 _cL
999 _c36928
_d36928