00258nam a2200109Ia 450000500170000000800410001704100120005808200150007010000170008524500240010226000220012620241221143421.0241221s9999||||xx |||||||||||||| ||und||  aEnglish  a519.5bGUP  aGupta, S. P. 0aStatistical Methods  bSultanchandc1993