Columbia subject headings:
Bréal, Michel, 1832-1915.
Historical linguistics--History--19th century.
Wegener, Philipp, 1848-1916.
Whitney, William Dwight, 1827-1894.
Harvard subject headings:
Bréal, Michel, 1832-1915.
Historical linguistics--History--19th century.
Wegener, Philipp, 1848-1916.
Whitney, William Dwight, 1827-1894.
Princeton subject headings:
Bréal, Michel, 1832-1915.
Historical linguistics--History--19th century.
Wegener, Philipp, 1848-1916.
Whitney, William Dwight, 1827-1894.