00326nam a2200157Ia 4500008004100000020000900041035001000050082000800060100001200068245002900080250000600109260003000115300000800145500000900153650000600162210723s9999||||xx |||||||||||||| ||und||  aNULL  a34871  BMAH  aMahajan 0aMethods In Biostatistics  a-  aN. DelhibJaypee Brothers  a334  a2210  a-