000 00406nam a2200133Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139522
082 _a535.4
_bOPE
100 _aOPEN University of Sri Lanka
245 _aCourse of study leading to the degree of bachelor of science level 5-physics PHU
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1989
300 _a87 p.
942 _cPR
999 _c60426
_d60426