Columbia subject headings:
Harvard subject headings:
Iran--History--Qajar dynasty, 1794-1925--Sources
Medicine--Iran--History--19th century--Sources.
Physicians--Austria--Biography
Physicians--Iran--Tehran--Correspondence.
Polak, Jakob Eduard, 1818-1891
Polak, Jakob Eduard, 1818-1891--Correspondence.
Polak, Jakob Eduard, 1818-1891--Friends and associates.
Princeton subject headings:
Iran--History--Qajar dynasty, 1794-1925--Sources.
Medicine--Iran--History--19th century--Sources.
Physicians--Austria--Biography.
Polak, Jakob Eduard, 1818-1891--Correspondence.
Polak, Jakob Eduard, 1818-1891.