000 00352nam a22001457a 4500
008 240711b |||||||| |||| 00| 0 eng d
020 _a0435686623
050 _aQC357.2
_b.N45
100 _aNELKON, M
245 _aOptics, Waves and Sound
250 _a6th
260 _aLondon
_bHeinemann Educational Books
_c1978
300 _avi, 642p.
942 _cBK
999 _c1223
_d1223