000 00302nam a2200133Ia 4500
008 130629s9999 xx 000 0 und d
082 _a521.54 BAK-A
100 _aBaker,Robbert H
245 _aAstronomy
260 _bVan Nostrand
_c1964
_aToronto
300 _a557
650 _aPhysics
942 _cBK
999 _c15722
_d15722