Library Information

Q
1-385            Science (General)
300-385            Cybernetics.  Information theory 

QA    
1-939            Mathematics
9-10.3             Mathematical logic
75.5-76.95         Computer science.  Electronic data processing
101-141.8          Elementary mathematics.  Arithmetic
150-272            Algebra
                       Including machine theory, game theory
273-274.76         Probabilities
276-280            Mathematical statistics
297-299.4          Numerical analysis
299.6-433          Analysis
                       Including analytical methods connected
                         with physical problems
440-699            Geometry
611-614.97           Topology
801-939            Analytic mechanics
                       For non-theoretical mechanics, see
                         QC120+

QB    
1-991            Astronomy
140-237            Practical and spherical astronomy
275-343            Geodesy
349-421            Theoretical astronomy and celestial mechanics
                       Including perturbations, tides
460-466            Astrophysics
468-480            Non-optical methods of astronomy
495-991            Descriptive astronomy
                       Including stellar spectroscopy,
                         cosmogony

QC    
1-999            Physics
81-114             Weights and measures
120-168.85         Descriptive and experimental mechanics
170-197            Atomic physics.  Constitution and properties
                     of matter
                       Including quantum theory, solid-state
                         physics
220-246            Acoustics.  Sound
251-338.5          Heat
350-467            Optics.  Light
                       Including spectroscopy
474-496.9          Radiation physics (General)
501-766            Electricity and magnetism
770-798            Nuclear and particle physics.  Atomic energy. 
                     Radioactivity
801-809            Geophysics.  Cosmic physics
811-849            Geomagnetism
851-999            Meteorology.  Climatology

QD
1-999            Chemistry
23.3-26.5          Alchemy
71-142             Analytical chemistry
146-197            Inorganic chemistry
241-441            Organic chemistry
450-731            Physical and theoretical chemistry
                       Including quantum chemistry,
                         stereochemistry, chemical reactions,                         
                         surface chemistry, thermochemistry,
                         solution chemistry,               
                         electrochemistry, radiochemistry,
                         radiation chemistry,                
                         photochemistry
901-999            Crystallography

QE    
1-996.5          Geology
351-399.2          Mineralogy
420-499            Petrology
500-625            Dynamic and structural geology
640-699            Stratigraphic geology
701-996.5          Paleontology
                       Including paleozoology and paleobotany

QH                 
                 Natural history (General).  Biology (General)
1-278.5            Natural history (General)
75-77                Nature conservation.  Landscape protection
201-278.5            Microscopy
301-705            Biology (General)
426-470              Genetics
471-489              Reproduction
501-531              Life
540-549              Ecology
                         Including general and animal ecology.
                         For human ecology, see GF; for plant
                           ecology, see QK
573-671              Cytology
705                  Economic biology

QK    
1-989            Botany
640-673            Plant anatomy
710-899            Plant physiology
900-989            Plant ecology

QL    
1-991            Zoology
750-795            Animal behavior and psychology
799                Morphology
801-950.9          Anatomy
951-991            Embryology

QM    
1-695            Human anatomy
601-695            Human embryology

QP    
1-981            Physiology
341-495            Neurophysiology.  Neuropsychology
501-801            Animal biochemistry
901-981            Experimental pharmacology

QR
1-500            Microbiology
75-99              Bacteria
180-189.5          Immunology
355-500            Virology