PY Publication Year

(a limit field)

1990 in py

py=1990

py=1998-1999

The PY field lists the year in which the original document was published. You can search for a single year or a range of years in this field. In addition to in and =, you may use the following operators with the PY field:

< less than,

such as py<1995

> greater than,

such as py>1998

<= less than or equal to,

such as py<=1997

>= greater than or equal to,

such as py>=1999

- within a range,

such as py=1998-1999

Browsing Publication Years

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