%0 Journal Article %T Effects of low and elevated CO 2 on C 3 and C 4 annuals %A Tissue, D. %A Griffin, K. %A Thomas, R. %A Strain, B. %J Oecologia %V 101 %N 1 %P 21-28 %@ 0029-8549 %D 1995-01-01 %I Springer-Verlag %~ DeepDyve