http://scienceblog.darrouzet-nardi.net/?p=689 Sat, 22 Dec 2012 00:59:34 +0000 hourly 1 https://wordpress.org/?v=5.7.1 http://scienceblog.darrouzet-nardi.net/?p=689&cpage=1#comment-30826 Sat, 22 Dec 2012 00:59:34 +0000 http://anthony.darrouzet-nardi.net/scienceblog/?p=689#comment-30826 For many years, I had a hand drawn version of the nitrogen cycle (drawn on an half-torn envelope). Then, I found yours about three years ago; a printout of that diagram of yours is posted on my office wall. I refer to it every now and then. Kudos!

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