Columbia subject headings:
Harvard subject headings:
Chemists--Germany--Rostock--Biography.
Industrialists--Germany--Rostock--Biography.
Pharmaceutical industry--Germany--Rostock--History.
Pharmacists--Germany--Rostock--Biography.
Pharmacy--Germany--Rostock--History.
Politicians--Germany--Rostock--Biography.
Witte, Friedrich, 1829-1893.
Princeton subject headings:
Diaries.
Industrialists--19th century--Biography.
Pharmacists--19th century--Biography.
Politicians--19th century--Biography.
Witte, Friedrich, 1829-1893--Diaries.
Witte, Friedrich, 1829-1893.