00293nam a2200133Ia 4500008004100000082001000041082001000051100000800061100001100069245001500080260002300095260002400118999001700142240117s9999||||xx |||||||||||||| ||und||  aL.R/S  b519.5  al.r  apotti  0astatistics  athiruvananthapuram  byamuna publications  c15857d15857