000			00287nam a2200121Ia 4500
008			220811s9999 xx 000 0 und d
245			_aPATENT JOURNAL METALLURGICAL ENGINEERING
260			_c2020-2021
500			_a"2020, 2021"
500			_a"4,1,2"
500			_aOCT-JUN
942			_cBV
999			_c23624 _d23624