Operating instructions, with handwritten notes, for an Agilent Bravo used at a COVID-19 testing centre
2020
2020
2015-2018
1981
2020
2020
2020
2020
1990-1998
1980's
1980s
2020
2020
2020
2020
2020
2020
2020
1780-1860
1885
1884
1991
1906
1911
1901-01-30
1911
1987
1920-1940
1906
1991
1889
1926
1894
1887
1895
1894-06-01
1962
1885
1940-1960
1895