- Publication venue
- Landbouw-Economisch Instituut
- Publication date
- 01/01/1966
- Field of study
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- Publication venue
- L.E.I.
- Publication date
- 01/01/1976
- Field of study
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- Publication venue
- [s.n.]
- Publication date
- 01/01/1973
- Field of study
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- Publication venue
- Publication date
- 01/01/1964
- Field of study
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- Publication venue
- L.E.I.
- Publication date
- 01/01/1967
- Field of study
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- Publication venue
- L.E.I.
- Publication date
- 01/01/1965
- Field of study
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