000 002480000a22001210004500
245 _aWaves
100 _aCoulson, C.A.
250 _a7th ed.
260 _aLondon
_bOliver & Boud
_c1955
080 _a530.145.6
_bC6
041 _aEN
942 _cBK
999 _c111585
_d111585