000 00359nam a2200133Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aUnesco, Research Centre, Delhi
245 0 _aWater evaporation control
260 _bUNESCO
_anew delhi
_c1966
300 _a256 p.
653 _aelelctronics
942 _c1
999 _c109615
_d109615