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_aChacón, E., Juan Carlos. _921708 |
| 245 | 1 | 4 | _aThe use of the 'NON-WEED' concept in traditional tropical agroecosystem of southeastern México |
| 260 |
_aCárdenas, Tab. : _bColegio Superior de Agricultura Tropical, _c1980 |
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| 300 | _ac.a. 21 h | ||
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0057 |
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_aBATCH-UPD _b10 _c20130110 _lUCH01 _h1958 |
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| 590 |
_aCONVERSION _b10 _c20130109 _lUCH01 _h1307 |
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| 650 | 1 | 4 |
_aEcología agrícola. _935165 |
| 650 | 1 | 4 |
_aMalas hierbas _xEcología. _970017 |
| 700 | 0 |
_aGliessman, Stephen R. _948282 |
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