000 00283nam a2200121Ia 4500
001 81436
008 170722s9999 xx 000 0 und d
100 _aGilbert, Rmand
245 _aReinforcement
_bBehavioral analysis /
260 _c1972.
700 _aMillenson , Jr
942 _cGEN
999 _c85431
_d85431