000 00322nam a2200133Ia 4500
008 190216s9999||||xx |||||||||||||| ||und||
100 _aNelkon. M A Nd Inst. P
245 0 _aLight And Sound
250 _a3rd Ed.
260 _bHeinemann Educational Books Ltd
_c1966
300 _a420
650 _aPhysics
942 _cBK
999 _c32732
_d32732