作者: John I. Hedges , Fredrick G. Prahl
DOI: 10.1007/978-1-4615-2890-6_11
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摘要: … analyses of organic materials in soils, recent sediments, and … specific molecules as indicators of the origin of organic matter in … In addition, 4-methyl sterols such as dinosterol, C37-C39 n-…