ISU Library has many books on careers and employment assistance.
We also have many books that are focused on careers in specific disciplines. You can search for them using Quick Search, the search box on the library's home page. You can search for vocational guidance physics or vocational guidance animal science or vocational guidance with any other subject area for which you're looking.
Most of these career guidance books will be either in the general collection or in the Leisure Collection, on the library's first floor just to the right of the central staircase. If you have any questions, ask the librarian at the Research Help Desk.