‘researchers’ historical pictures (exact matches)

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Scholars at work in the Library of Alexandria, Egypt
Scholars at work in the Library of Alexandria, Egypt
Three researchers outside the British experimental hut set up near Ostia to verify the mosquito-malaria theory
Three researchers outside the British experimental hut set up near Ostia to verify the mosquito-malaria theory
Chromatography columns, United Kingdom and Sweden,1975–1985
Chromatography columns, United Kingdom and Sweden,1975–1985
Henry Hill Hickman's satin waistcoat, Europe, 1820–1830
Henry Hill Hickman's satin waistcoat, Europe, 1820–1830
Medical researchers at work
Medical researchers at work
Box of aspirin tablets, London, England, 1949–1966
Box of aspirin tablets, London, England, 1949–1966
Quinine researchers of the 19th century: II
Quinine researchers of the 19th century: II