1
Wiedemann, Peter M.
1999
“...UCA - Environmental problems, man and environment - general aspects...”1999
2
Wiedemann, Peter M.
1998
“...UCA - Environmental problems, man and environment - general aspects...”1998
3
Karger, Cornelia R.
1998
“...UCA - Environmental problems, man and environment - general aspects...”1998
4
Wiedemann, Peter M.
1997
“...UCA - Environmental problems, man and environment - general aspects...”1997
5
6
Sassin, Wolfgang
1988
“...UCA - Environmental problems, man and environment - general aspects...”1988
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