U.S. Geological Survey Soil Sample Archive

The U.S. Geological Survey (USGS) Soil Sample Archive is a database of information describing soil and sediment samples collected in support of USGS science. Samples...美国地质调查局（U.S. Geological Survey, USGS）土壤样本档案库是一个收录用于描述为支持该局科研工作所采集的土壤及沉积物样本相关信息的数据库。样本……