Enter search terms to search the Major Concept(s) field within a record from 1993 to the present.

Major Concepts are broad subject areas covered in the source document. Major Concepts broader terms indicates the broader subject area(s) versus narrower terms that are more focused in scope.

To see a list of major concepts, click this link. You can browse two forms of the list: an alphabetized list and a list organized by concept cluster.

To display this field on the Search page, review the instructions for Add Another Field.

Major Concepts Search Examples

• Computational Biology
• Marine Ecology
• Pest Assessment Control and Management
• Immune System OR Infection

Major Concepts List

Click the major concept list link to access a list of major concepts that you can add to your query. Using the Major Concepts search aid allows you to locate the preferred terms to add to your search.