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Searching the Major Concepts Field

Major Concepts are broad subject areas covered in the source document. There are 168 Major Concepts terms, which are arranged in a hierarchical tree structure. A search for a high-level Major Concepts term automatically retrieves items indexed with any term subordinate to it. For example, a search for Agriculture as a Major Concepts term retrieves records that contain Agronomy, Animal Husbandry or Horticulture in the Major Concepts field, along with records that contain Agriculture in the Major Concepts field.   

Use the Major Concepts list to select terms to search this field. 

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Examples

• Computational Biology
• Marine Ecology
• Immune System OR Infection