Columbia subject headings:
Harvard subject headings:
Becke, Friedrich, 1855-1931--Bibliography.
Becke, Friedrich, 1855-1931--Notebooks, sketchbooks, etc.
Mineralogists--Austria--Biography.
Mineralogy--Austria--Vienna--History--19th century.
Mineralogy--Austria--Vienna--History--20th century.
Petrology--Austria--Vienna--History--19th century.
Petrology--Austria--Vienna--History--20th century.
Princeton subject headings:
Becke, Friedrich Johann Karl, 1855-1931.
Mineralology--Austria.