000 00407nam a2200133Ia 4500
008 180710s9999 xx 000 0 und d
020 _a123695
082 _a541.37
_bOPE
100 _aOPEN University of Sri Lanka
245 _aCourse of study leading to the degree of bachelor of scienc level 5 PSU 3118-phy
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1989
300 _a95 p.
942 _cPR
999 _c60344
_d60344