
Samples of cinchona bark
1930-1931
1930-1931
1990-1995
1850-1900
1838-1870
1830-1880
2021
1979-1985
1870-1900
1870-1900
2007
2001-2005
2005
2005
2007
2007
1968
1968
1968
1998
1948
1980-1982
2020
2007
1865
before 1889
1870-1889