00305nam a2200121 a 450000500170000002000150001708200170003210000130004924500560006226000310011830000180014970000160016720251203092012.0  a0446347949  a659,bD, rie  aRies, Al  aPositioning: the battle for your mind, Al Ries, eng  aNew York, Warner, USc1993  ax,214p.c18cm  aTrout, Jack