Books

1. Common Bean Improvement in the Twenty-First Century (Developments in Plant Breeding)
   

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2. Finnish farming: Typology and economics (Geography of world agriculture)
   

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3. Soil survey of Lancaster County, Pennsylvania
   

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4. Co-Managing the Commons: Setting the Stage in Mali and Zambia (Bulletin (Koninklijk Instituut Voor De Tropen), 346.)
   

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5. Soils in the British Isles
   

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Books