Columbia subject headings:
Mari El (Russia)--Antiquities--Periodicals.
Mari El (Russia)--History--Periodicals.
Harvard subject headings:
Mari El (Russia)--Antiquities--Periodicals.
Mari El (Russia)--History--Periodicals.
Princeton subject headings:
Mari El (Russia)--Antiquities--Periodicals.
Mari El (Russia)--History--Periodicals.