Johann Mayer
Johann Mayer may refer to: * Johann Tobias Mayer (1752–1830), German physicist * Johann Mayer (serial killer) (1886–1923), German serial killer * Johann Christoph Andreas Mayer (1747–1801), German anatomist * Johann Friedrich Mayer (theologian) (1650–1712), German Lutheran theologian and professor of theology * Johann Friedrich Mayer (agriculturist) (1719–1798), German Reformed pastor and agricultural reformer * Johann Prokop Mayer (1737–1804), Austrian naturalist and botanist Provided by Wikipedia-
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