000 00407nam a2200133Ia 4500
008 220201s1972 xx 000 0 eng d
041 _aeng
082 _a370
_bSar
100 _aSarason, Irwin.
245 0 _aReinforcing productive classroom behavior :a teacher's guide to behavior modification /Irwin Sarason.
260 _aNew York
_bBahavioral Publications
_c1972
650 _aEducation
942 _2ddc
_cBK
999 _c4191
_d4191