Columbia subject headings:
Harvard subject headings:
Chemists--Germany--Holzminden--Biography.
Flavoring essences industry--Germany--Holzminden--History.
Haarmann & Reimer.
Haarmann, Wilhelm
Haarmann, Wilhelm, 1847-1931.
Vanillin--History.
Princeton subject headings:
Chemists--Germany--Holzminden--Biography.
Flavoring essences industry--Germany--Holzminden--History.
Haarmann & Reimer.
Haarmann, Wilhelm.
Vanillin--History.