Columbia subject headings:
Dissertations, Academic--United States--Bibliography.
European Americans--Bibliography.
United States--Emigration and immigration--Bibliography.
United States--Ethnic relations--Bibliography.
Harvard subject headings:
Dissertations, Academic--United States--Bibliography
European Americans--Bibliography.
United States--Emigration and immigration--Bibliography.
United States--Ethnic relations--Bibliography.
Princeton subject headings:
Dissertations, Academic--United States--Bibliography.
European Americans--Bibliography.
United States--Emigration and immigration--Bibliography.
United States--Ethnic relations--Bibliography.