000 00244nam a2200109Ia 4500
008 220630s9999 xx 000 0 und d
020 _a9780439696760
082 _aJ 520 FIR
100 _aFirth, R
_9157637
245 0 _aAstronomy
942 _cBK
_w561
_xJohn Tresidder
_y561
_zJohn Tresidder
999 _c702008
_d702007