who is responsible for the abo classification system
ABO blood group system The ABO blood types were discovered by Karl Landsteiner in 1901, for which he received the Nobel Prize in Physiology or Medicine in 1930. ABO blood types are also present in some other animals such as rodents and apes, including chimpanzees, bonobos, and gorillas.[4]
Central Statistics Office (India) The CSO was set up in the cabinet secretariat on 2 May 1951[1].