When searching for a resource in the library, you can use a Library of Congress Classification Number to search the catalog, to find the exact location of an item and to find more items that have similar content.
Astronomy QB1-991
Physics QC1-999
Chemistry QD1-999
Inorganic Chemistry QD146-197
Organic Chemistry QD241-441
Natural History QH1-278.5
Biology QH301-705.5
Evolution QH359-425
Genetics QH426-470
Ecology QH540-549.5
Botany Subclass QK
Zoology Subclass QL
Physiology Subclass QP