135,15€(IVA inc.)
Persistence pays: U.S. agricultural productivity growth and the benefits from public R&D spending
- Alston, Julian M.
- 978-1-4419-0657-1
- 2010-01-01
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Sweet potato: an untapped food resource
- Woolfe, Jennifer A.
- 978-0-521-05053-1
- 2008-02-14