1. Climate change. The IPCC scientific assessment;Houghton, J.T.,1990
2. Lessons from climates of the past;Huntley, B.,1990
3. Some northern sources of atmospheric methane: production, history and future implications;Nisbet, E.G.;Canadian3rournal ofEarth Sciences,1989
4. Feeding the world in the nineties;Brown, L.R.; Young, E.,1990
5. Sea level rise;Warrick, R.; Oerlemans, J.,1990