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_a630.717 _bS95Y 1964 |
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_aSymposium Interamericano de Investigación de las Funciones de la Divulgación en el Desarrollo Agrícola ( _n1 _d: 1964 _c: México) _9110951 |
| 245 | _aFirst Interamerican Research Symposium... | ||
| 260 |
_aMéxico, D.F. : _b(s.e.), _c(1964) |
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| 300 |
_a163 p. _b: ilus. |
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0049 |
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| 650 | 1 | 4 |
_aExtensión agrícola. _939144 |
| 700 | 0 |
_aMyren, Delbert T. _979961 |
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