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999 _c76335
_d76335
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020 _a83793
041 _aEN
082 _a621.384
_bBUD
_223
100 _aBUDDEN, K.G.
_eaut
245 _aRadio waves in the ionosphere
_c/[by] K.G.Budden
_b: the mathematical theory of the reflection of radio waves from stratified ionised layers
260 _aCambridge
_bAt the University press
_c1961
300 _axxiv, 542 p.
509 _aNS
942 _cS