Columbia subject headings:
Harvard subject headings:
Albania--Commerce--Periodicals.
Albania--Economic conditions--Periodicals.
Albania--Politics and government--1944-1990--Periodicals.
Bulgaria--Commerce--Periodicals.
Bulgaria--Economic conditions--1944-1990--Periodicals.
Bulgaria--Politics and government--1944-1990--Periodicals.
Romania--Commerce--Periodicals.
Romania--Economic conditions--1945-1989--Periodicals.
Romania--Economic conditions--1989---Periodicals.
Romania--Politics and government--1944-1989--Periodicals.
Princeton subject headings:
Albania--Economic conditions--Periodicals.
Bulgaria--Economic conditions--1944-1989--Periodicals.
Romania--Economic conditions--1945-1989--Periodicals.