Lindbloms skriv

Thursday, October 18, 2007

The art of problem posing

...is available as eBook.

Xanthoria kl. 11:08 AM

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About Me

Xanthoria: I am a biologist, lichenologist, and philatelist. I have been keeping a diary/weblog on the internet for many years. And I have been keeping a paper diary on and off for 48 years.

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