000 00322nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aNational Academy Press
245 0 _aEnergy for Rural Development
260 _bNational Academy Press
260 _c1981
365 _b0.00
650 _aEngineering
942 _cBK
999 _c239919
_d239919