000 00300nam a2200109Ia 4500
008 211217s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aStevens Harvey A
245 0 _aMental Retration
260 _bChicago University Press
_aChicago
_c1972
942 _c1
999 _c148649
_d148649