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Items where Author is "Ruthenberg, Hans."
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Ruthenberg, Hans. Farming systems in the tropics/ Hans Ruthenberg. Oxford: Clarendon Press, 1976. ISBN 198594585
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Items where Author is "Ruthenberg, Hans."
Group by: Item Type | No Grouping Jump to: Book Number of items: 1. BookRuthenberg, Hans. Farming systems in the tropics/ Hans Ruthenberg. Oxford: Clarendon Press, 1976. ISBN 198594585 |
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