000			00338nam a2200157Ia 4500
008			160615s9999 xx 000 0 und d
100			_aOster(Ludwig)
245			_aModern Astronomy
250			_a1 ed.
260			_b"Holden-Day,Inc"
260			_c1973
300			_a448 p.
942			_cBooks
999			_c9325 _d9325