000 00298nam a2200145Ia 4500
008 220919s9999 xx 000 0 und d
245 0 _aMathematics XI Science
250 _a1st
260 _aNA
260 _bNCERT
260 _c2019
300 _a483
650 _aMathematics
942 _c11
999 _c161026
_d161026