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Greek-British poet, author, doctor, scientist and naturalist

Greek Civil Engineer and Physicist

Greek University Professor and the First Scientific Historian of Modern Greece.

Russian botanist (1891-1969)

Russian physicist (1887-1963)

Greek physician, professor of mineralogy and petrology

Greek pathologist

Greek geologist, universtiy professor and politician

griechischer Arzt und Mikrobiologe

Dutch cosmologist

��λληνας δασολόγος και πολιτικός

Greek botanist and writer

Greek botanist

Greek biologist and university professor

Greek university professor

Greek physicist and High School teacher

Greek scientist and university professor

Greek physicists and university professor

Greek scientist and philologist

Greek botanist, literary and writer (1858-1908)