000 00270nam a2200121Ia 4500
008 220811s9999 xx 000 0 und d
245 _aINVENTI IMPACT ENERGY AND POWER
260 _c2020-2020
500 _a"1,2,3"
500 _a2020
500 _aJAN-SEP
942 _cBV
999 _c23609
_d23609