@conference {1657, title = {An investigation of accurate gas exchange measurements for determing a large river carbon isotope mass balance}, booktitle = {37th Liege International Colloquium on Gas Transfer at Water Survaces}, year = {2005}, note = {id: 490}, month = {2005}, address = {Liege, Belgium}, author = {Raymond, P. A. and McGillis, W. R. and Bauer, J. E. and Caraco, N. F. and Cole, J. J.} }