000 00402nam a2200133Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139528
082 _a530.11
_bOPE
100 _aOPEN University of Sri Lanka
245 _aCourse of study leading to the degree of bachelor of science-level 5, physics PS
260 _aNugegoda
_bThe Unviersity of Sri Lanka
_c1988
300 _a91 p.
942 _cPR
999 _c60459
_d60459