Most Biology books available for check out are in the MAIN COLLECTION on the 3rd floor of Walsh Library.
To find a print book, you need to know the call number, which you can find by using the "search books" tab above the search box on the library home page. You might try browsing the shelves around the following call numbers:
QH301-705.5 Biology (General)
QK1-989 Botany; QL1-991 Zoology
QR1-502 Microbiology; QR355-502 Virology
You can also search for and access eBooks through either the "search books" or "search eBooks" tabs.