000 00292nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aButler, R. R.
245 0 _aScientific Discovery
260 _bThe English Universities Press
_aLondon
_c1947
650 _aScientific Discovery
942 _cBK
999 _c8119
_d8119