000			00343nam a2200157Ia 4500
008			160615s9999 xx 000 0 und d
100			_aLENA(Pierre)
245			_aObservational astrophysics
260			_aBerlin
260			_bSpringer
260			_c1987
300			_a328 p.
942			_cBooks
999			_c16999 _d16999