000 00269nam a2200121Ia 4500
008 220811s9999 xx 000 0 und d
245 _aINVENTI IMPACT ENERGY AND POWER
260 _c2021-2021
500 _a"3,4"
500 _a2021
500 _aJULY-DEC
942 _cBV
999 _c23611
_d23611