Using more fields allows a progressively restrictive search (i.e.: only the entries where author is the one requested AND keyword is the one requested AND ... will be shown).
The entered strings must be at least 3 characters long.
Strings entered in the Title, Publisher, Publication place and Series fields will return all entries containing the input string in the whole title, publisher or place name.
If entries for the Author and Keyword fields are not exact, a list of the relevant possibilities will be shown in a panel.
Interaction with the Keyword fields will enable the Thesaurus interface in the left column. Click on the annotations (B - Broader terms, N - Narrower terms, R - Related terms) to browse the thesaurus; click on the Descriptor to search the Catalogue entries relevant to that keyword.