000 00340nam a2200133Ia 4500
008 211214s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aNelkon, M
245 0 _aPhysics and radio
260 _bEdward Arnold pub.
_aLondon
_c1951
300 _avi, 883 p.
653 _aEngineering
942 _c1
999 _c35587
_d35587