Columbia subject headings:
Europe--Economic integration.
Europe--Politics and government--1989-
Russia (Federation)--Foreign economic relations--Ukraine.
Ukraine--Foreign economic relations--Russia (Federation)
Harvard subject headings:
Europe--Economic integration.
Europe--Politics and government--1989-
Russia (Federation)--Foreign economic relations--Ukraine.
Ukraine--Foreign economic relations--Russia (Federation)
Princeton subject headings:
Europe--Economic integration.
Europe--Politics and government--1989-
Russia (Federation)--Foreign economic relations--Ukraine.
Ukraine--Foreign economic relations--Russia (Federation).