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Scientists by period of activity
Ancient \| 4th century \| 5th century \| 6th century \| 7th century \| 8th century \| 9th century 10th century \| 11th century \| 12th century \| 13th century \| 14th century \| 15th century 16th century \| 17th century \| 18th century \| 19th century \| 20th century \| 21st century

This category contains scientists active during the
20th-century. Scientists can also be browsed by nationality.