http://www.nnrg.org/

http://ncasi.uml.edu/COLE/

http://www.nrs.fs.fed.us/pubs/3292

http://nrs.fs.fed.us/pubs/8192

http://andrewsforest.oregonstate.edu/data/tools/software/biopak/biopak_r.cfm?topnav=149

http://www.forestcarbonstandards.org

http://www.safnet.org

http://oswa.org

http://www.sustainableforestry.net/

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