In order to find books held in the University of Maine System libraries you will need to consult URSUS, the online catalog. Because journal article citations are not individually included in URSUS, it is more effective to search databases for journal articles.
If you do not know the exact subject heading describing the topic you need, try doing a keyword search using terms related to your topic and then click on the subject heading links found within the relevant records to find additional, useful resources.
If the material you need is not available at the USM Libraries or online, the Libraries can usually obtain it for you. Books should be ordered through URSUS or MaineCat if possible; for journal articles and for books unavailable through URSUS or MaineCat, use Interlibrary Loan.