00534nam a22001937a 4500003000400000008004100004082001800045100002700063245009400090260003900184300001000223502001100233650002400244650001300268650002700281650001000308650001100318650001100329OSt250604b        |||||||| |||| 00| 0 eng d  a630.715bC32E  aChaudhary, Arun Kumar.  aEffectiveness of Training and Visit Extension System in Bihar / cby Arun Kumar Chaudhary  a.- Pusa, Samastipurb: RAUc, 1990  a205p.  bPh. D.  aExtension Education  aTraining  aVisit Extension System  aBihar  aThesis  aPh. D.