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_aCanada. Department of Agriculture _918180 |
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_aPesticides _b: their implications in agriculture |
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| 260 |
_aOttawa : _bDepartment of Agriculture, _c1973 |
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| 300 | _a38 p. | ||
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_aDepartment of Agriculture. Publication _v; 1518 |
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| 590 |
_aBATCH-UPD _b10 _c20130110 _lUCH01 _h0706 |
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_aPesticidas. _987536 |
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_aPesticidas _xEfecto en el medio ambiente. _987548 |
| 650 | 1 | 4 |
_aPesticidas _xEfecto en plantas. _987553 |
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_aDepartment of Agriculture. Publication _v; 1518 _931841 |
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