92,765 reputation
581169
bio website von-eitzen.de/math/tntrep.xml
location Bonn, Germany
age 48
visits member for 1 year, 7 months
seen 7 hours ago

I did study math and had a knack for it, but I am sooo out of that business now ...


3
Feb 23 '13 at 15:37
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Feb 21 '13 at 17:30