[Terrapreta] USGS Papers citing TP

[Shengar at aol.com]

Here's Some papers from the USGS on their Carbon Cycles page, citing our  
usual TP suspects work;
 
_http://search.usgs.gov/results.html?cx=005083607223377578371%3Ab5ixbbpqpx0&co
f=FORID%3A11&q=terra+preta+&sa=Search#550_ 
(http://search.usgs.gov/results.html?cx=005083607223377578371:b5ixbbpqpx0&cof=FORID:11&q=terra+preta+&sa=Search#5
50) 
 
Lots of good data on SOC soil maps, soil carbon numbers, char analysis of  
lignin & cellulose at different temperatures & times.
 
Erich



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