When you locate a book in Google Books, select Find in a Library to enter the WorldCat catalog. From there, you can determine if the book is already in the WVU Libraries system. If it is not, you can use the Interlibrary Loan request button to generate a prepopulated request form.
Many books about Psychology, Religion, and Philosophy are shleved in the area with the call numbers beginning with "B". In the Downtown Library, these are shelved on the 4th (fourth) floor (map of the 4th floor).