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First steps in reconstructing Early Jurassic sea water temperatures in the AndeanBasin of northern C
The stable isotope (δ13C, δ18O) composition of a collection of Lower Jurassic brachiopods and oysters from the Andean ......
季节性是旅游业最典型的特征之一,也是旅游业常面临的风险问题,但有关如何规避旅游季节风险的研究比较少。基于1998—2007年中国入境......
Pesticide Influence on the Desmid Flora of a Reservoir in an Agricultural Region at Campo Verde, Mat
The objective of the research was to investigate the influence of pesticides on the desmid flora. Five series of samples......
利用1961~ 2007年NCEP/NCAR的再分析逐日资料,分析高原主体上空大气环流的季节变化和受到高原影响的东亚大型环流系统的季节变化,以......