000 00305nam a2200121Ia 4500
008 220216s9999 xx 000 0 und d
100 _aMullins L
245 0 _aAspects of physical basis of reinforcement
260 _bIRI Transactions
_c1956
300 _a231-241
650 _aReinforcement
942 _cJS
999 _c54510
_d54510