000			00373nam a2200169Ia 4500
008			180626s9999 xx 000 0 und d
020			_a0800883209
082			_a520.9 K838w
100			_aKopal, Zdenek
245		0	_aWidening horizons
260			_aNew York
260			_bTaplinger Pub. Co.
260			_c1971
300			_a176
650			_aAstronomy
942			_cBK
999			_c33274 _d33274