Our Library uses the Library of Congress Classification System to assign call numbers. In this system, the first two or three lines of a call number identify the subject of a book or other item. The main call number used for Microbiology is QR.
Subclass QR
QR1-502 Microbiology
QR1-74.5 General
QR75-99.5 Bacteria
QR99.6-99.8 Cyanobacteria
QR100-130 Microbial ecology
QR171 Microorganisms in the animal body
QR180-189.5 Immunology
QR355-502 Virology