1. 2. Methan (CH4);Ahlgrimm,1990
2. The long-term ecological effects of pollutants; some issues
3. The carbon cycle;Bolin,1983
4. Other greenhouse gases and aerosols. Assessing their role in atmospheric radioactive transfer;Bolle,1986
5. Physiology, biochemistry and genetics of denitrogen fixation;Bothe,1983