临夏地区春季经济花果树类及农作物霜冻灾害形成条件及防御对策
림하지구춘계경제화과수류급농작물상동재해형성조건급방어대책
Formation Condition and Defense Contermeasures on Frost Damage of Economical Flower and Fruit Trees and Crops in Linxia Area in Spring
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