Katherine N. Probst/ Thomas C. Beierle
(1)
Marion Clawson/ Jack L. Knetsch
(1)
Paul R. Portney (EDT)/ John P. Weyant (EDT)
(1)
Roger A. Sedjo/ Alberto Goetzl/ Steverson O. Moffat
(1)
Wallace F. Lovejoy/ Paul T. Homan
(1)
William D. Nordhaus (EDT)
(1)