Roffe, R C

 
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Sir Humphry Davy, chemist, 1822.
Sir Humphry Davy, chemist, 1822.
Sir Humphry Davy, English chemist, c 1810s.
Sir Humphry Davy, English chemist, c 1810s.
Charles Babbage, pioneer of machine computing, 1833.
Charles Babbage, pioneer of machine computing, 1833.
Sir Humphry Davy, English chemist, 1822.
Sir Humphry Davy, English chemist, 1822.
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