00539nas a2200229   4500000000100000008004100001260001600042653003400058653001400092653002500106653002200131653001100153653001200164653002100176653001300197100001600210700002000226245003500246300000800281490000600289022001400295       1972                            d  c1972 Feb 1910aContinental Population Groups10aHepatitis10aHepatitis B Antigens10aHepatitis B virus10aHumans10aleprosy10aRural Population10aZimbabwe1 aSwanepoel R1 aCruickshank J G00aAustralia antigen in Rhodesia.  a4460 v1  a0140-6736