000 003490000a22001450004500
008 160527b1980 xxu||||| |||| 00| 0 eng d
020 _a0408106573
041 _aeng
080 _a53
_bB6
942 _cBK
100 _aBolton, W.
245 _aRays, waves and oscillations : book 6
260 _aLondon
_bButterworths
_c1980
300 _a96p. : ill.
999 _c11486
_d11486