000			00294nam a2200133Ia 4500
001			17009
008			170722s9999 xx 000 0 und d
100			_aAllen, C. W.
245			_aAstrophysical quantities /
260			_c1955.
653			_aAstronomy
653			_aMathematics
942			_cGEN
999			_c54901 _d54901