Call numbers appear on the spine of each book and in the library's catalogs. The catalog call number directs the user to the book's location on the shelf. Call numbers are subject-based, so, as seen below, all books with a call number in the 200s will be related to Religion.
000 – Computer science, knowledge & systems
010 – Bibliographies
020 – Library & information sciences
030 – Encyclopedias & books of facts
040 – [Unassigned]
050 – Magazines, journals & serials
060 – Associations, organizations & museums
070 – News media, journalism & publishing
080 – Quotations
090 – Manuscripts & rare books
100 – Philosophy
110 – Metaphysics
120 – Epistemology
130 – Parapsychology & occultism
140 – Philosophical schools of thought
150 – Psychology
160 – Philosophical logic
170 – Ethics
180 – Ancient, medieval & eastern philosophy
190 – Modern western philosophy
200 – Religion
210 – Philosophy & theory of religion
220 – The Bible
230 – Christianity
240 – Christian practice & observance
250 – Christian pastoral practice & religious orders
260 – Christian organization, social work & worship
270 – History of Christianity
280 – Christian denominations
290 – Other religions
300 – Social sciences, sociology & anthropology
310 – Statistics
320 – Political science
330 – Economics
340 – Law
350 – Public administration & military science
360 – Social problems & social services
370 – Education
380 – Commerce, communications & transportation
390 – Customs, etiquette & folklore
400 – Language
410 – Linguistics
420 – English & Old English languages
430 – German & related languages
440 – French & related languages
450 – Italian, Romanian & related languages
460 – Spanish, Portuguese, Galician
470 – Latin & Italic languages
480 – Classical & modern Greek languages
490 – Other languages
500 – Science
510 – Mathematics
520 – Astronomy
530 – Physics
540 – Chemistry
550 – Earth sciences & geology
560 – Fossils & prehistoric life
570 – Biology
580 – Plants (Botany)
590 – Animals (Zoology)
600 – Technology
610 – Medicine & health
620 – Engineering
630 – Agriculture
640 – Home & family management
650 – Management & public relations
660 – Chemical engineering
670 – Manufacturing
680 – Manufacture for specific uses
690 – Construction of buildings
700 – Arts
710 – Area planning & landscape architecture
720 – Architecture
730 – Sculpture, ceramics & metalwork
740 – Graphic arts & decorative arts
750 – Painting
760 – Printmaking & prints
770 – Photography, computer art, film video
780 – Music
790 – Sports, games & entertainment
800 – Literature, rhetoric & criticism
810 – American literature in English
820 – English & Old English literatures
830 – German & related literatures
840 – French & related literatures
850 – Italian, Romanian & related literatures
860 – Spanish, Portuguese, Galician literatures
870 – Latin & Italic literatures
880 – Classical & modern Greek literatures
890 – Other literatures
900 – History
910 – Geography
920 – Biography & genealogy
930 – History of ancient world (to ca. 499)
940 – History of Europe
950 – History of Asia
960 – History of Africa
970 – History of North America
980 – History of South America
990 – History of other areas