1. Environmental Effects of Ozone Depletion: 1991 Update,1991
2. Environmental Effects of Ozone Depletion: 1994 Update,1994
3. Environmental Effects of Ozone Depletion: 1998 Update,1998
4. Scientific Assessment of Ozone Depletion: 1994,1994
5. Scientific Assessment of Ozone Depletion,1998