Columbia subject headings:
Ipatʹevskai︠a︡ letopisʹ--Criticism, Textual.
Kievan Rus--History--862-1237--Sources.
Lavrentʹevskai︠a︡ letopisʹ--Criticism, Textual.
Russia--History--To 1533--Sources.
Harvard subject headings:
Ipatʹevskai︠a︡ letopisʹ--Criticism, Textual.
Kievan Rus--History--862-1237--Sources.
Lavrentʹevskai︠a︡ letopisʹ--Criticism, Textual.
Russia--History--To 1533--Sources.
Ukraine--History--To 1648--Sources.
Princeton subject headings:
Russia--History--To 1533--Sources.
Ukraine--History--To 1340.--Sources.