000 003940000a22001690004500
050 _a010
060 _a100
082 _a630.715 SIN
100 _aSingh, BK
100 _aSingh, Dan
245 _aAgricultural extension and rural development
260 _aDelhi, Narendra publishing house
260 _c2011
300 _a278
650 _aEducation, teaching -learning
942 _cBK
999 _c367869
_d367869