PT Publication Type

(a limit field)

clinical-case-report in pt

pt=clinical-trial

bibliography in pt

The PT field indicates the specific kind of publication. Use the PT field to limit your search to records of a particular type of publication such as "empirical-study." Hyphenate multiword terms to ensure precise retrieval. Most records prior to 1967 do not contain this field. You can search using the field label (PT) or from the Publication Type Index described below.

Browsing Publication Types

As an alternative to searching with the field label, you can browse available publication types and search for them directly from the Publication Type Field-Specific Index. This field-specific index contains only publication formats drawn from the PT field, therefore, your search will always yield results. Search results display in the PT field.