Smith, T.M. Cramer, W.P. Dixon, R.K. Leemans, R. <br/><br/>
The Global Terrestrial Carbon  Cycle 

 - 19-37 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Terrestrial Biosphere<br/>Inadequate Understanding<br/>Doubled Atmospheric Concentration of Co2