There are 3 pieces of information you need about a book to find it on the shelf.
The status: NOT CHECKED OUT means you can get it today.
The call number : LC40.G88 1992
The location : UMSL TJ Level 4.
Reading a Call Number
Although it was developed to organize materials housed at the Library of Congress, the Library of Congress Classification system (LCC) is now widely used in academic libraries around the world. The LCC system begins with 21 categories, each identified by a letter of the alphabet. Most of the categories are also broken down - to get more specific - and identified by 1 or 2 more letters. For example N contains Fine Arts; ND is Painting, a topic in fine art.
Individual topics are also delineated by place, time period, etc. using numbers (in ND673 you'll find books on painter Peter Paul Rubens who lived 1577-1640). A call number may have up to 4 digits (1-9999) in the main part, and then if necessary, decimal places that may have only numbers or both a letter and numbers. (Library of Congress Classification http://www.loc.gov/catdir/cpso/lcc.html)
On the first floor (two floors down from where you enter) there is a section of Philosophy books which you can browse and find books that you can check out.
B1-5802 Philosophy (General)
B69-99 General works
B108-5802 By period, Including individual philosophers and schools of philosophy
B108-708 Ancient
B720-765 Medieval
B770-785 Renaissance
B790-5802 Modern
B808-849 Special topics and schools of philosophy
B850-5739 By region or country
B5800-5802 By religion
BC1-199 Logic
BC11-39 History
BC25-39 By period
BC60-99 General works
BC171-199 Special topics
BD10-701 Speculative philosophy
BD10-41 General philosophical works
BD95-131 Metaphysics
BD143-237 Epistemology. Theory of knowledge
BD240-260 Methodology
BD300-450 Ontology, Including being, the soul, life, death
BD493-701 Cosmology, Including teleology, space and time, structure of matter, plurality of worlds
Books A–D and F, COM1, additional Mercantile exhibits, carrels and tables