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Acta Agriculturae Boreali-Sinica
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中文
The Influence of Climatic Variation on the Double Cropping System of Winter Wheat and Maize in Beipng Region
Cheng Yannian
ACTA AGRICULTURAE BOREALI-SINICA . 1994, (
1
): 18 -24 . DOI: 10.3321/j.issn:1000-7091.1994.01.004
