000 00412nam a2200157Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139499
082 _a535
_bOPE
100 _aOPEN University of Sri Lanka
245 _aPhysics: geometrical optics book 3
250 _a2nd ed.
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1996
300 _a365 to 635 p.
650 _aOptics
942 _cR
999 _c74443
_d74443