000 00277nam a2200121Ia 4500
008 160710s1969 xx 000 0 und d
082 _a537.12 DAV
100 _aDAVID,P.
245 _aPROPAGATION OF WAVES
260 _bPERGAMON PRESS
_c1969
300 _a320
942 _2ddc
_cB
999 _c33393
_d33393