000 00318nam a2200121Ia 4500
005 20251007104241.0
008 251006s9999 xx 000 0 und d
100 _anagel,ernest
245 0 _aobservation and theory in science nagel,ernest
260 _a1st ed | Baltimore Johns Hopkins
260 _c1971
942 _cBOK
999 _c3307
_d3307