Columbia subject headings:
Dissertations, Academic--Abstracts.
O'Neill, Eugene, 1888-1953--Criticism and interpretation--Abstracts.
O'Neill, Eugene, 1888-1953--Research.
Harvard subject headings:
Dissertations, Academic--Abstracts.
O'Neill, Eugene, 1888-1953--Criticism and interpretation--Abstracts.
O'Neill, Eugene, 1888-1953--Research.
Princeton subject headings:
Abstracts.
Dissertations, Academic--Abstracts.
O'Neill, Eugene, 1888-1953--Criticism and interpretation--Abstracts.
O'Neill, Eugene, 1888-1953--Research.