003050000a22001210004500060000800000082001600008100002700024245002400051260003100075260000900106300000700115650006100122  a100  a630.715 SUP  aSopan, Vishnupant Supe  aExtension education  aNagpur, Science publishers  c1973  a43  aAgriculture- Extension/ Extension education- Agriculture