93,690 reputation
581172
bio website von-eitzen.de/math/tntrep.xml
location Bonn, Germany
age 48
visits member for 1 years, 7 months
seen 25 mins ago

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


3
Jan 18 '13 at 15:53
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Jan 17 '13 at 22:31