000 00288nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _aJAM/O
100 _aJAMES B CONANT
245 0 _aON UNDERSTANDING SCIENCE
260 _bTHE NEW AMERICAN LIBRARY
_c1952
300 _a144
942 _cTB
999 _c28378
_d28378