000 00453nam a22001577a 4500
008 230427b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a535.12+535.22
_bK0
100 _aBrillouin, Leon
_9206
245 _aWave propagation and group velocity
260 _aNew York:
_bAcademic Press,
_c1960
300 _axi, 154p.
650 _aWave
653 _aGroup velocity
942 _2udc
_cBK
999 _c24269
_d24269