With a Boolean search, you can do complex, precise searches by typing CCL (Common Command Language) search commands. The search command can include the following parts:
: The text for which you are searching
: The access points (fields) you want to search; for example, author or title (see Search Access Point (Field) Codes)
: Operators (connectors) that link one part of the search with another
Example:
To find the works of author Asimov published in or after
1970, you type the following command:
AU=asimov AND PD >= 1970
AU specifies the access point Author. The search text
for this access point is asimov.
AND is the Boolean operator connecting
the two conditions of this search (the author and the date).
PD specifies the access point Publication
Date. The search text for this access point is 1970.
The symbol >= is the relative operator
greater than or equal to.
In this section:
Search Access Point (Field) Codes
Do a search by typing a command