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| 003 | CR-SiIICA | ||
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| 041 | _aeng | ||
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_968543 _aForsythe, W. |
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| 100 |
_9123193 _aTafur, N. |
||
| 245 | _aThe effect of various methods of land preparation on soil resistance to penetration and yield of corn (Zea mays L.), cassava (Manihot esculenta Crantz) and sweet potato (Ipomoea batatas L.) in association, 1: Effect of cropping systems and land preparation on the soil | ||
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_9171443 _aTurrialba (IICA) _x0041-4360 _vv. 35(4) p. 357-370 |
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| 500 | _aGráf.; 13 ref. Sum. (En, Es); tab. | ||
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_aP33 _b00207 |
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_c2425 _d2425 |
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