000 00655 a2200193 4500
040 _aIARI, New Delhi
100 1 _aKnight, A.J.
502 _gSingh, K.N.
245 1 _aStudy of the relative effectiveness of three modes of presentation, Preferences listening and post listening behaviour of farm broadkast listeners
300 _a206p.
650 _aExtension activities
650 _aRadio
650 _aDifffusion of information
650 _aInformation technology
650 _aAudio-visual aids
502 _cIARI, Division of Agricultural Extension, New Delhi
_bPh.D.
_d1974
942 _2udc
_cT
901 _aT2546
999 _c140165
_d140165