To limit to Smith (or other institution) library holdings, click on the institution name in the upper right hand corner, under the “My Account” line.
Note that the "correct" way to search by subject isn't always obvious. You may prefer to try a keyword search first to find a few relevant titles. Then click on the subject headings on those records to conduct a more comprehensive subject search, e.g.,
Some useful subject headings for finding materials for DAN 171 assignments.