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Humphry Davy, English chemist, (1833)
12901767 - Humphry Davy, English chemist, (1833)
Sir Humphry Davy, 1st Baronet, Cornish chemist and physicist
12914351 - Sir Humphry Davy, 1st Baronet, Cornish chemist and physicist
Humphry Davy, English chemist, (1833)
12897781 - Humphry Davy, English chemist, (1833)
Notes on Davy safety lamp,19th century
11708572 - Notes on Davy safety lamp,19th century
Notes on Davy safety lamp,19th century
11708571 - Notes on Davy safety lamp,19th century
Notes on Davy safety lamp,19th century
11708570 - Notes on Davy safety lamp,19th century
Safety lamp,19th century
11612950 - Safety lamp,19th century
Sir Humphrey Davy
11657782 - Sir Humphrey Davy
A welsh coal miner's safety lamp
11903951 - A welsh coal miner's safety lamp
Mining safety lamp,19th century
11903972 - Mining safety lamp,19th century
Sir H. Davy's safety lamp for miners
11903957 - Sir H. Davy's safety lamp for miners
Humphry Davy, English Chemist and Inventor
12650604 - Humphry Davy, English Chemist and Inventor
Humphrey Davy, English chemist
12504347 - Humphrey Davy, English chemist
George Stephenson,British engineer
11688262 - George Stephenson,British engineer
Mine safety research,1940s
11713132 - Mine safety research,1940s
George Stephenson,British engineer
11688247 - George Stephenson,British engineer
Humphrey Davy,British chemist
11674718 - Humphrey Davy,British chemist
Humphry Davy,English chemist
11563292 - Humphry Davy,English chemist
Humphry Davy,English chemist
11550097 - Humphry Davy,English chemist
Coal mine,USA,1908
11903978 - Coal mine,USA,1908
Miners' safety lamps
11903958 - Miners' safety lamps
Sir Humphry Davy,English chemist
11614702 - Sir Humphry Davy,English chemist
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