Columbia subject headings:
Laisant, C.-A. (Charles-Ange), 1841-1920.
Mathematicians--France--Biography.
Mathematics--France--History--19th century.
Mathematics--France--History--20th century.
Harvard subject headings:
Laisant, C.-A. (Charles-Ange), 1841-1920.
Mathematicians--France--Biography
Mathematics--France--History--19th century.
Mathematics--France--History--20th century.
Princeton subject headings: