classifications
| search classifications for: Crookes, Sir William |
Technology personalities - engineers, builders, manufacturers, industrialists
Electrical and electronic engineers, researchers into electricity
Measuring devices and devisers, direction indicators, units used in technology, inventors of measuring instruments
Chemists, including physical, industrial, agricultural, analytical, (in)organic (but not biochemistry)
Personalities
Inventors
England, UK/GB royals, unspecified British
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