By Kuemmel Rolf   Robert Josef   Loewen Achim   in Proceedings of the Water Environment Federation

ISSN:1938-6478|2000|12|732-750

Water Environment Federation‎(2000)‎

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By Issa Maruan   Robert Josef   Denecke Martin   Kümmel Rolf   in Management of Environmental Quality: An International Journal

ISSN:1477-7835|14|5|571-576

Emerald Group Publishing Ltd‎(2003)‎

Access to resources Favorite 6.7396603