000 00323nam a2200133Ia 4500
008 221231s9999 xx 000 0 und d
100 _aHarris, Godfrey
_9481
245 0 _aImproving Your Concentration Skills
260 _bJaico Publication
260 _c2004
300 _a112
650 _aPsychology
_9482
942 _cMBA_BK
999 _c220
_d220