"Keimplasma." . . "National Plant Germplasm System." . . . . "Nutzpflanzen." . . "USA." . . "Genetische Ressourcen." . . "Konservierung." . . . . . . . . . . . . . "The National Plant Germplasm System of the United States"@en . . "The national plant germplasm system of the United States" .