Off-campus Access to Library Resources
Before you can access Library resources from off campus make sure you have configured your computer with proxy server settings.
After you make a one-time change in your web browser settings, the proxy server will ask you to log in with a CalNet ID or Library PIN when you click on the link to a licensed resource.
Other ways to get help
Other ways to get help: in person, by e-mail, using specialized chat services
Using call numbers to find books
Books and journals are arranged on our shelves according to the Library of Congress (LC) classification system. Each is assigned a unique call number based on its subject matter and other characteristics. Items on the same subject will often be grouped together.
In using a call number to locate a book on the shelf, consider each element in turn before moving on to the next segment.
These call numbers are arranged as they should appear on the shelves. In each case, the element shown in boldface distinguishes the number from the preceding one:
| Q 76 K26 |
QA 17 F75 |
QA 17.1 C98 |
TK 3 Z37 |
TK 29 M49 |
TK 29 M5 1997 |
TK 29 M5 2007 |
Each call number consists of several elements. For example::
TK
7881.6
M29
1993
The FIRST line, TK, is based on the broad subject of the book. Within Class T for technology, TK represents electrical engineering.
The SECOND line, 7881.6, defines the subject matter more finely. When looking for the book, read this as a whole number with a decimal component. In this example, TK7881.6 represents magnetic recording (a subdivision of TK— electrical engineering).
The THIRD line, M29, usually indicates author, but may also represent a further subject subdivision, geographic area, etc. There may also be a fourth line, formatted the same way. When looking for the book, read the numeric component as if it were preceded by a decimal point. In the example above, the numeric part of M29 should be read as ".29" (and the call number TK7881.6 M29 comes before TK7881.6 M4).
The YEAR of publication, such as 1993, may also be present. These file in chronological order and often indicate successive editions of a book. The call number may also have additional elements, such as volume numbers.
Ask a Librarian 24/7 Chat
Javascript required to chat
When you use this chat widget a reference librarian from Berkeley, or another UC campus, or another academic library around the US may be answering your question. We share information about our libraries to make sure you get good answers.
If the librarian can't answer you well enough, your question will be referred to a Berkeley librarian for followup.
Have fun chatting.
All Questions Welcomed!
"There are no dumb questions!" 
That's the philosophy of reference librarians, who are here to save you time and trouble. If you get stuck, you can talk to a reference librarian at any campus library.
Getting Material from NRLF
A large part of the library's collection is stored off campus in an environmentally secure building called the Northern Regional Library Facility [NRLF].
Submit online requests via the REQUEST button in OskiCat to borrow material shelved at NRLF. To receive electronic or paper copies of book chapters or journal articles, submit an online request via the "Request an article from NRLF (photocopy or web delivery)" link that appears in eligible titles in OskiCat. Staff at public service desks of any campus library can assist you with further questions.

Log in to Request with your Calnet ID and fill out the screens. Choose the volume you want, for periodicals:


