论文部分内容阅读
Methods for determination of the impact of weeds in annual crops
【作 者】
:
【机 构】
:
Crop Sciences Dept., Federal University at Rio Grande do Sul, Porto Alegre, Brazil
【出 处】
:
The 6th International Weed Science Congress(第六届国际杂草科学大会)
【发表日期】
:
2012年8期
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