Columbia subject headings:
Education--Poland--Periodicals--Indexes.
Poland--Rural conditions--Periodicals--Indexes.
Poland--Social conditions--Periodicals--Indexes.
Polish periodicals--Indexes.
Harvard subject headings:
Education--Poland--Periodicals--Indexes.
Poland--Rural conditions--Periodicals--Indexes.
Poland--Social conditions--Periodicals--Indexes.
Polish periodicals--Indexes.
Princeton subject headings:
Education--Poland--Periodicals--Indexes.
Poland--Rural conditions--Periodicals--Indexes.
Poland--Social conditions--Periodicals--Indexes.
Polish periodicals--Indexes.