TY - BOOK AU - Great Britain. Department of Health and Social Security SN - 0113205376 PB - H.M.S.O TI - Memorandum on vaccination against smallpox KW - Smallpox - Vaccination. CY - London N1 - Revised [ed.] N1 - Cover title. PY - 1974 M1 - Accessed from http://nla.gov.au/nla.cat-vn215257 ER -