About FRISCHHERZ H
About Univ. Bodenkultur, Wien, AUT
About JUNG H
About Univ. Bodenkultur, Wien, AUT
About URBAN W
About Univ. Bodenkultur, Wien, AUT
About Oesterreichische Wasserwirtschaft
About river pollution
About Federal Republic of Germany
About Water pollution in general
About 河川
About 浸透水
About 地下水