000 00297nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _aPC 509
_bGRE
100 _aGregory, Sir Richard
245 _aDiscovery ; or the spirit and service of science
260 _bPenguin Books
_aHarmondsworth
_c1949
999 _c99201
_d99201