
Penicillin powder in bottle
1942
1942
1943
2000-100 BCE
1940
1940
1940
1942
1940
1955; 1830
1943
1942
circa 1942
1939
1938 and 1951
1939
1839 (original); circa 1988 (replica)
1940
1801-1892 (prepared); 1946 (element replaced)
1940
1830 (original); 1967 (model)
circa 1940
4000-2001 BCE
1939
1990-96
1940
1943
1903 (original); 1982 (model)
circa 1939
1940
1939
1940-07-16
1939-05-22
1940-07-16
1940-01-08
1940-03
1939-08-13
1940-01-28
1939-12-19
1939
1939-06-27
1940-01-23
1940-01-08
1940-01-08
1940
1940-01-08
1940-01-28
1939-06-08
1941-09-30
1939-05-21
1940-01-08