00293nam a2200109 a 450000500170000008200190001710000060003611000160004224500490005826000610010730000150016820251203090512.0  a331.2592,btra  d_  aMathur, J.S  aTraining needs of block development officers  aHyderabad: National Institute of Rural Developmentc1982  a92p.c22cm