Moravek Endre: Index acronymorum selectorum. Pars 1. Instituta rerum publicarum (A MTAK kiadványai 46. Budapest, 1965)

- 279 OCA 1. Office des Cités Africaines, Br /f/ 2. Office of the Comptroller of the Army, /US/ /е/ 3. Operational Control Authority /mil./, /US/ /е/ OCAC Office, Chief of Air Corps, /US/ /е/ OCAFF Office, Chief of Army Field Forces, /US/ /е/ OCAS Organization of Central American States /е/ = ODECA OCB 1. Office des Céréales Panifiables, /Syrie/ /f/ 2. Oil Control Board /е/ 3. Operations Coordinating Board, /US/ /е/ OCC 1. Official Classification Committee /е/ 2. Office of the Comptroller of the Currency /Treasury Department,/ /US/ /е/ 3. Ohio Circuit Court /е/ OCCCA Office of Civilian Conservation Corps Activities /е/ OCCCRBAR Office of the Co-ordinator of Commercial and Cultural Relations between American Republics /е/ OCCWS Office of the Chief of Chemical Warfare Service. /US/ /е/ OCD Office of Civil Defense, /US/, W /е/ OCDE Organisation de Coopération et de Développement Économiques , P /f/ OCDM Office of Civil and Defense Mobilization, /US/ /е/ OCDO Office, Chief Disbursing Officer, /US/ /е/ O.C.E. 1. Office Chérifien de Contrôle et d'Exportation, Casablanca /f

/ 2. Office, Chief of Engineers, /US/ /е/ O.C.E.E. Organisation de Coopération Économique Européenne /f

/ = OEEC OCF Office, Chief of Finance, /US/ /е/ OCI Office of Co-ordination of Information /е/ OCIA Office of Co-ordinator of International Affairs /е/ OCIAA Office of Co-ordinator of Inter-American Affairs, /US/ /е/ OCLA Organisation Commune de Lutte Antiacridienne /f

/ O.C.M. Organisation Civile et Militaire /f/ OCMI Organisation Consultative Maritime Intergouvemementale /f/