00286nam a2200109Ia 4500008004100000082001800041100002000059245004300079250001200122260003400134300000800168240913s9999||||xx |||||||||||||| ||und||  a001.42  SUR/R  aSuresh K Sharma 0aResearch methodology and biostatistics  a1st Ed.  bElsevieraHaryana ,indiac337  a337