000 00310nam a2200133Ia 4500
001 16833
008 170722s9999 xx 000 0 und d
100 _aLovell, Bernard
245 _aOur present knowledge of the universe /
260 _c1967.
653 _aAstronomy
653 _aMathematics
942 _cGEN
999 _c71651
_d71651