|QH||Natural History (Biology)|
|QH 366, 430||Genetics & Genomes|
|QH 450||Developmental Biology|
|QH 450||Molecular Biology|
|QP 551, QD 431||Proteins|
For more details, visit the Library of Congress Classification Outline.
Library of Congress Subject Headings are the words and phrases that you will use to do a subject search in the catalog (as opposed to a keyword search). Although Geology is a broad Library of Congress Subject Heading, you will probably get better results if you are more specific. To search for the geology of a particular state, subject for Geology and the state (e.g. Geology--New Mexico). Be careful in your choice of words--some words and phrases that are natural to you will not be Library of Congress Subject Headings.
It is often helpful to do a keyword search on your topic first. Once you find an appropriate source, look at the subject headings and click the linked subject heading in the catalog.