00286nam a2200109Ia 450000500170000000800410001708200160005810000140007424500460008826000340013430000080016820260224040928.0260224s9999||||xx |||||||||||||| ||und||  a001.422 PEC  aPeck, R.  0aIntroduction to statistics & data analys.  aUSA: Language Learning c2008  a847