000 00291nam a2200145Ia 4500
008 220919s9999 xx 000 0 und d
245 0 _aEconomics XI
250 _a1st
260 _aNA
260 _bState Board
260 _c2019
300 _a80
650 _aEconomics
942 _c11
999 _c161018
_d161018