000 00262nam a2200109Ia 4500
008 221219s9999 xx 000 0 und d
100 _aR.K. Biswas
245 0 _aDrip & Sprinkler irrigation
260 _bNIPA
650 _aAgricultural Engineering
942 _cBK
_05
999 _c3030
_d3030