000 00316nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aS.L.Gupta & V.Kumar
245 0 _aAstronomy
250 _a2nd RP
260 _aMeerut
260 _bPragati Prakashan
260 _c1992
650 _aAstronomy
942 _cBK
999 _c15290
_d15290