The Library of Congress classification system is used to group similar subjects together, which makes the collection browsable. Here are some related chemistry subjects and their call numbers.
Listed below are the letters and titles of the main classes of the Library of Congress Classification. Click on any class to view an outline of its subclasses in an interactive PDF format. This list is based on the Library of Congress Classification Outline.
B -- Philosophy, Psychology, Religion
C -- Auxiliary Sciences of History
G -- Geography, Anthropology, Recreation