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|a 630
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1 |
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|a Röling, Niels.
|
| 245 |
1 |
0 |
|a Extension science:
|b information systems in agricultural development /
|c Niels Röling.
|
| 260 |
|
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|a Cambridge :
|b Cambridge University Press,
|c 1988.
|
| 300 |
|
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|a 233 p. :
|b il.
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| 504 |
|
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|a Bibliografía: p. 216-224.
|
| 653 |
|
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|a Plider
|
| 653 |
|
|
|a Agricultura
|
| 942 |
|
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|c BK
|h 630
|i R646
|m P
|2 ddc
|6 630_000000000000000_R646
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