000 00347nam a2200145Ia 4500
001 17203
008 170722s9999 xx 000 0 und d
100 _aMessier, Charks
245 _aNebulae and star clusters ed by Kenneth Glyn Jones /
260 _c1968.
653 _aAstronomy
653 _aMathematics
653 _aNebulae
942 _cGEN
999 _c73389
_d73389