000 00381nam a2200145Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139529
082 _a530.11
_bOPE
100 _aOPEN University of Sri Lanka
245 _aPhysics: relativity block 2b
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1988
300 _a91 p.
650 _aRelativity
942 _cR
999 _c74450
_d74450