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Stettmer, Christian.
1999
“...UCA - Environmental problems, man and environment - general aspects...”1999
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“...UCA - Environmental problems, man and environment - general aspects...”
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“...UCA - Environmental problems, man and environment - general aspects...”
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“...UCA - Environmental problems, man and environment - general aspects...”
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Wackernagel, Mathis
1997
“...UCA - Environmental problems, man and environment - general aspects...”1997
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“...UCA - Environmental problems, man and environment - general aspects...”
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“...UCA - Environmental problems, man and environment - general aspects...”
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“...UCA - Environmental problems, man and environment - general aspects...”