000 00384nam a2200157Ia 4500
008 190516s9999 xx 000 0 und d
100 _aNelkon, M.
_9120100
245 0 _aLight and Sound
250 _a2
260 _bWilliam Heinemann Ltd
_c1950
_aMelbourne
300 _a364
600 _tPhysics
_91741
650 _aPhysics
_91741
942 _cBK
999 _c110863
_d110863