 | | GATE - 4/84 - Site - oriented agriculture
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 |  | | Focus |
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 | | Sustainable agriculture in rural development |
 | | The exploitation of plants cultivated in the andes as food plants |
 | | Biological farming in Bolivia's high-lying inter-andean valleys |
 | | Earthworms - Workers with a double usefulness |
 | | Minimal soil tillage celebrates its comeback |
 | | Constraints to tropical upland farming and their resolution |
 | | Important addresses |
 | | Annotated bibliography on site-oriented agriculture |
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