CIESIN Copyright Permission Statement

Copyright Permission Statement

Mégie, G., M. L. Chanin, D. Ehhalt, P. Fraser, J. F. Frederick, J. C. Gille, M. P. McCormick, and M. Schoeberl. 1989. Global trends. Chapter 2 in Scientific assessment of stratospheric ozone: 1989, Volume 1. World Meteorological Organization Global Ozone Research and Monitoring Project--Report no. 20. Geneva: World Meteorological Organization.

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