Finding a book using hte call numbers is pretty straightforward. The call number is made up of letters and numbers and books are shelved alphabetically by the first letter or letters in the call number:
Q 141. C23
QA 234 .G67
QD 34 . F45
After the first letters is a number which is read as a simple whole number:
Q 24. C23
Q 54 .G67
Q 134 . F45
The second part of the call number is another letter shelved alphabetically, but the number after is read as a a decimal:
Q 141. C235
Q 141 .C3
Q 141 . C499999
Q 141 . C5
Q 141 . C499999 comes before Q 141 . C5 because both '499999' and '5' are treated as decimals.
Richardson Library has over 500,000 print books on site and over 1 million digital-books online. This guide will help you search for, locate and access these books. Remember: You can search all collections via the Library Discovery Service.
Read more below to
Look at the LOCATION ITEMS field in the catalogue record. In the example below, the record indicates that the book is available (in yellow), meaning it can be checked out, that it is located in the stacked (in green) meaning it is located on the 3rd floor, and it can be located on the shelf using the call number (in blue). The Item in Place field indicates that the book is loanable (in orange) meaning it can be checked out. If the book is in the Reference Collection of Davis Room special collections then it can only be used in the library and cannot be checked out.
Click on the Map It button to open a floor plan of the library to show where the shelf is located.

Location and borrowing periods are show below. Click on a link to ope a library floor plan.
Circulating Collections:
Non-Circulating Books [Can not be borrowed]
