Call numbers are meant to be read - treat them like an address when trying to locate a book or other material on the shelves. Call numbers are usually located on the spine of a book, or the front cover in the upper left-hand corner.
What do these letters and numbers mean?
Therefore, this call number would appear in progression as:
PS3200 PS3200 PS3200
.M435 .P82 .T908
1998 2008 2003
This 3 minute video, from the University of Arkansas Library, goes through the process of reading a call number. It's well worth your time if you don't know how to find a book in the library.