Crookes, William
Nuttall Encyclopedia · 1907 · p. 13
an eminent chemist and physicist, born in London; distinguished for researches in both capacities; discovered the metal thallium, and invented the radiometer; b . 1832.
Bu kavram başka kaynaklarda da geçiyor
The American Dictionary and Cyclopedia (1909)
Chandler's Encyclopedia (1898)
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