00306nam a2200109Ia 450000500170000000800410001708200140005810000210007224500480009326000470014130000080018820260225051032.0260224s9999||||xx |||||||||||||| ||und||  a311.2 CHA  aLincoln L. Chao  0aStatistics: Methods & analysis 2nd edition   aIslamabad: National Book Foundation c1982  a556