Columbia subject headings:
Authorship, Disputed.
English drama--Early modern and Elizabethan, 1500-1600.
Shakespeare, William, 1564-1616--Authorship--Marlowe theory.
Harvard subject headings:
Authorship--History--16th century.
English literature--Authorship.
Espionage, British--History--16th century.
Marlowe, Christopher, 1564-1593--Authorship.
Shakespeare, William, 1564-1616--Authorship--Marlowe theory.
Princeton subject headings:
English literature--Authorship.
Espionage, British--History--16th century.
Marlowe, Christopher, 1564-1593--Authorship.
Shakespeare, William, 1564-1616--Authorship--Marlowe theory.