000 00264nam a2200109Ia 4500
008 160921s9999 xx 000 0 und d
100 _aKEYES KENNETH S
245 _aHOW TO DEVELOP YOUR THINKING ABILITY
260 _bMCGRAW
_c1950
300 _a246
942 _cBK
999 _c10716
_d10716