Author： Becker Heinrich
Publisher： oekom verlag
ISSN： 0940-5550
Source： GAIA - Ecological Perspectives for Science and Society, Vol.4, Iss.1, 1995-01, pp. : 5-6
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GAIA - Ecological Perspectives for Science and Society, Vol. 4, Iss. 2, 1995-03 ,pp. :