Columbia subject headings:
Birnbaum, Nathan.
Jews--Biography.
Jews--Cultural assimilation.
Sociolinguistics.
Yiddish language--History.
Yiddish language--Revival.
Harvard subject headings:
Birnbaum, Nathan, 1864-1937.
Birnbaum, Nathan.
Jews--Cultural assimilation.
Sociolinguistics.
Yiddish language--History.
Yiddish language--Revival.
Yiddishists--Biography.
Princeton subject headings:
Birnbaum, Nathan, 1864-1937.
Jews--Europe--Biography.
Zionists--Europe--Biography.