Correction
ECOLOGY. For the article “Surface gas-exchange processes of snow algae,” by William E. Williams, Holly L. Gorton, and Thomas C. Vogelmann, which appeared in number 2, January 21, 2003, of Proc. Natl. Acad. Sci. USA (100, …
ECOLOGY. For the article “Surface gas-exchange processes of snow algae,” by William E. Williams, Holly L. Gorton, and Thomas C. Vogelmann, which appeared in number 2, January 21, 2003, of Proc. Natl. Acad. Sci. USA (100, …