
Model of Leeuwenhoek's microscope
1901-1930
1901-1930
1918
circa 1900
1915-1918
1920-1925
1901-1910
1918-1920
1919
1912
1910-1926
1909-1910
1900-1910
1923
1897
1915-1925
1915
1903
c.1912
1907
1830 (original); 1967 (model)
1914
1896
1926
1904
1920
1910-1920
1901
1928
circa 1910
1914-1920
circa 1900
1914-1918
1920-1929
1910
1922
1900
1955; 1830
1915-1917
1898-1900
1903
1914
1901-1930
1901-1930
1907-1920
1914-1918
1901
1918
1913-1923
1925-1928
1916-1917