Columbia subject headings:
Austria--Description and travel.
Austria--History--Leopold II, 1790-1792.
Bulgaria--Description and travel.
Ebûbekir Râtib Efendi, 1749-1799--Travel.
Hungary--Description and travel.
Romania--Description and travel.
Harvard subject headings:
Austria--Description and travel.
Ebûbekir Râtib Efendi, 1749-1799--Journeys.
Princeton subject headings:
Austria--Description and travel.
Austria--History--Leopold II, 1790-1792.
Bulgaria--Description and travel.
Ebûbekir Râtib Efendi, 1749-1799--Travel.
Hungary--Description and travel.
Romania--Description and travel.