000 00305nam a22001217a 4500
050 _aMED. BF722
_bH85
100 _aHutt, S.F.
245 _aDirect observation and messurement of behavior
260 _aLondon
_bCharles C Thomas publisher
_c1970
300 _axii, 224p.
650 _aBehavior
942 _cBK
999 _c12545
_d12545