000 00348 a2200133 4500
082 _a530
_bOPE
090 _c9815
_d13688
100 _aThe Open University of Sri Lanka
245 _aPhysics
_bphysics in technology
260 _aNawala
_bThe Open University of Sri Lanka
_c1988
_g1988
300 _avi, 211p.
_c29cm.
650 _aPhysics
942 _cL
999 _c38361
_d38361