000 00286nam a2200121Ia 4500
100 _aHelmstadter, G.C.
942 _cBK
654 _a
245 _aPrinciples of Psychological Measurement
260 _aLondon
_bMethuen & Co. Ltd
_c1966
082 _a151.2
300 _bHb
_axx, (2), 248
999 _c343573
_d343573
041 _aeng