Options for closed water systems : sustainable water management ; selected proceedings of the international congress, held in Wageningen, The Netherlands, 11 - 13 March, 1998

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Options for closed water systems : sustainable water management ; selected proceedings of the international congress, held in Wageningen, The Netherlands, 11 - 13 March, 1998

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Loosdrecht, Marinus Cornelis Maria | Katalog Agrar | 1999

Sustainable land use planning : proceedings of an International Workshop [Sustainable Land Use Planning], 2 - 4 September 1992, Wageningen, the Netherlands

Lier, Hubert N. | Katalog Agrar | 1994