000 00410nam a2200157Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139494
082 _a531.32
_bOPE
100 _aOPEN University of Sri Lanka
245 _aPhysics: waves and vibrations book -1
250 _a2nd ed.
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1995
300 _a185 p.
650 _aWaves
942 _cR
999 _c74452
_d74452