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Gass, T. ,  Frese, L. ,  Begemann, F. ,  Lipman, E. ,  International Plant Genetic Resources Institute ,  European Cooperative Programme for Plant Genetic Resources ,  Food and Agriculture Organization of the United Nations ,  [Implementation of the Global Plan of Action in Europe -conservation and sustainable utilization of plant genetic resources for food and agriculture: Proceedings of the European Symposium, 30 June-3 July 1998, Braunschweig, Germany] ,  Implementation of the Global Plan of Action in Europe -conservation and sustainable utilization of plant genetic resources for food and agriculture: Proceedings of the European Symposium, 30 June-3 July 1998, Braunschweig, Germany

Frison, Emile A. ,  Ambrose, M. ,  Begemann, F. ,  Knüpffer, H. ,  [Report of a Working Group on Barley: Fourth meeting, 10-12 May 1993, Gatersleben, Germany] ,  Report of a Working Group on Barley: Fourth meeting, 10-12 May 1993, Gatersleben, Germany