000 00273nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _bNIG
100 _aNigam, B.K
245 0 _aSocial Theory & Educational Systems
260 _bKanishka
_c1993
300 _a507
942 _cBK
999 _c885
_d885