To find items by subject in the library catalogue do an
For example:
Subheadings or extensions, for example, countries, relevant century, type of publication (catalogs, exhibitions, bibliographies etc) can be applied to subject headings to narrow the search. For example:
A primary source of information is an original document , object or an original thought. First-hand information. This includes the reports on discoveries or events and are usually the first formal appearance of original research.
Primary sources
A secondary source of information is information created about a primary source. Second-hand information.
Secondary sources
Ithaca College Library has developed a useful guide to the differences between primary and secondary sources
Things to notice about your Search results