000 00291nam a2200121Ia 4500
008 220811s9999 xx 000 0 und d
245 _aJOURNAL OF MINES METALS AND FUELS
260 _c2020-2021
500 _a"68,69"
500 _a"7,8,9,10,11 & 12,1,2"
500 _aJULY-FEB
942 _cBV
999 _c23651
_d23651