In addition to using OneSearch, you can browse the library shelves for books on your topic. Books about surgery are located in the RD subclass of the Library of Congress of Classification System.
RD32-33.9 Operative surgery technique
RD63-76 Operating rooms; operating instruments, appratus, and appliances
RD99-99.35 Surgical nursing
RD520-599.5 Surgery by region, system, or organ