000 00375nam a2200145Ia 4500
008 190516s9999 xx 000 0 und d
100 _aNelkon, M.
_9123944
245 0 _aPhysics and Radio
260 _bEdward Arnold (Publishers) Ltd.
_c1944
_aLondon
300 _a888
600 _tPhysics
_91741
650 _aPhysics
_91741
942 _cBK
999 _c115404
_d115404