What has the author Bernd Gugele written?

Bernd Gugele has written:

'European Community and member states greenhouse gas emission trends 1990-1998' -- subject(s): Atmospheric Greenhouse effect, Environmental policy, Greenhouse effect, Atmospheric, Greenhouse gases

'European Community and member states greenhouse gas emission trends 1990-1999' -- subject(s): Air, Atmospheric Greenhouse effect, Environmental policy, Greenhouse effect, Atmospheric, Greenhouse gas mitigation, Greenhouse gases, Pollution, Statistics