Using Limit Fields

The limit fields listed below are specially indexed fields that allow you to limit your searches to records of a particular characteristic, such as type of publication or language of text.

You can search these fields with in or =. For example, to retrieve documents published originally in French, type:

french in la or la=french

Descriptor Subfields (DSF)

Language (LA)

Publication Type (PT)

Publication Year (PY)

Update Code (UD)

URLs, Etc. (XURL)

In addition to in and =, you may use the following operators with the PY and UD fields:

< less than,

such as py<1990

> greater than,

such as ud>199201

<= less than or equal to,

such as py<=1989

>= greater than or equal to,

such as py>=1992

- within a range,

such as py=1998-1999