000 00269nam a22001097a 4500
082 _a153.4
_bHER. P.18
100 _aMichel Hersen
245 _aProgress in behaviour modification. V.18
260 _aOrlando
_bAcademic Press
_c1984
650 _aPsychology
942 _cBK
999 _c205402
_d205402