000 00397nam a2200145Ia 4500
008 180710s9999 xx 000 0 und d
020 _a139495
082 _a531.32
_bOPE
100 _aOPEN University of Sri Lanka
245 _aPhysics PHU 2141: waves and vibrations book 1
250 _a2nd ed.
260 _aNugegoda
_bThe Open University of Sri Lanka
_c1995
300 _a185 p.
942 _cPR
999 _c74422
_d74422