O) 1983 CENTRAL AFRICAN, WORLD WILDLIFE FUND STAMP, WWF, BLACK RHINOCEROS, HISTORY, XF
O) 2021 CENTRAL AFRICAN REPUBLIC, MEDICINE, PANDEMIC 2020, COVID 19, CORONAVIRUS, RESPIRATORY INFECTION DISEASE, INDIA FIGHTS THE VARIANT, FIRST WUHAN OUTBREAK, MNH
O) 2021 CENTRAL AFRICAN REPUBLIC, MEDICINE, PANDEMIC 2020, COVID 19, CORONAVIRUS, RESPIRATORY INFECTION DISEASE, SUPPORT GLOBAL IMMUNIZATION, MNH
O) 2021 CENTRAL AFRICAN REPUBLIC, MEDICINE, PANDEMIC 2020, COVID 19, CORONAVIRUS, RESPIRATORY INFECTION DISEASE, FIGHT AGAINST COVID, SANITARY AND HEALTH MEASURES, MNH