If you are familiar with MARC cataloging, you may search by MARC tag in the
Expert Search option on the left of the screen. Enter the three-digit tag
number, the subfield if relevant, and the value or text that corresponds to the
tag. For example, to search by publisher name, enter 260 b Random House
. To
search several tags simultaneously, use the Add Row option. Click Submit to
run the search.
Use the MARC Expert Search only as a last resort, as it can take much longer to retrieve results than by using indexed fields. For example, rather than running an expert search for "245 a Gone with the wind", simply do a regular title search for "Gone with the wind".