Delwedd:Bernard Bolzano.jpg

From en.wikipedia: 16:07, 22 Mar 2004 . . en:User:Magnus Manske (114863 bytes) (In the public domain by age)

Description:Bernard Placidus Johann Nepomuk Bolzano (October 5, 1781 – December 18, 1848) was a Czech mathematician, theologian, philosopher and logician.

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See also Image:Bolzano bernard.jpg