Compound Microscope by Carl Zeiss, Jena, German, 1870-1888
1870-1888
1870-1888
1970
1925-1929
1970
1939-1945
1976
1980-1987
1958-1965
1937-1945
1900
1940
1970
1891-1930
1900-1940
1941-1960
1910-1930
1906-1911
1939-1945
1895-1899
1890-1900
1910-1920
1901-1920
1910-1940
1880-1900
1901-1945
1925-1935
1915-1916
1965
1945-1960
1967
1906-1945
1880-1900
1860-1900
1926-1929
1960-1965
circa 1912
1890-1900
1890-1900
1900-1945
1905-1915
1866-1889
1871-1900
1900-1950