Johan Wilhelm Zetterstedt (1785-1874) was a Swedish naturalist who worked mainly on Diptera and Hymenoptera.
Read more about Johan Wilhelm Zetterstedt: Biography, Selected Works
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“Poverty in itself does not make men into a rabble; a rabble is created only when there is joined to poverty a disposition of mind, an inner indignation against the rich, against society, against the government.”
—Georg Wilhelm Friedrich Hegel (1770–1831)