TY - BOOK AU - Ahlar, J., A.S.Denning and J.Gosz TI - Terrestrial carbon observation: the ottawa assessment of requirements, status and next steps held on feb 8-11 2000, ottawa Canada SN - 9251 048010 AV - BSL FAO QH 344 T4646 2002 PY - 2002/// CY - FAO PB - Rome ER -