书名原文:Trace elements in soils Trace elements in soils 并列题名：Trace elements in soils 书名原文:The trace elements and man. 书名原文:Finite elements in flasticity 书名原文:Finite elements in geomechanics The trace elements and man 书名原文: Great experiments in physics. 书名原文:Teaching elementary industrial arts 书名原文:Finite element handbook