Themes
- Ancient, medieval, Oriental philosophy
- Specific philosophical schools
- Paranormal phenomena
- Psychology
- Philosophy & psychology
- Metaphysics
- Logic
- Modern western philosophy
- Epistemology
- Bibliographies
- General subject catalogs
- Bibliographies of works from specific places
- The book
- Encyclopedias in other languages
- Islam
- Christian moral & devotional theology
- Bible
- Social & ecclesiastical theology
- Comparative religion & other religions
- Science & religion
- Sufism
- Christian orders and local church
- Other religions
- Islamic Law
- Early church & Eastern churches
- Persecution in church history
- Christian experience, practice & life
- Creeds & catechisms
- Education
- Social groups
- Political science
- Economics
- Public administration & military science
- Customs, etiquette, folklore
- Commerce, communications & transpostation
- Collections of General Statistics
- Law
- Social sciences
- Culture & institutions
- Private law
- Military, tax, trate & industrial law
- Etiquette (Manners)
- Civil procedure & courts
- Folklore
- Social welfare problems & services
- Factors affecting social behavior
- International commerce
- Law of nations
- Socialism & related systems
- International relations
- Sea forces & warfare
- Public finance
- Civil & political rights
- Constitutional & administrative law
- The legislative process
- Insurance
- Miscellaneous kinds of associations
- Criminal law
- Railroad transportation
- Law of specific jurisdictions & areas
- Production
- Relation of state to organized groups
- Financial economics
- Communications; telecommunication
- Military science
- Elementary education
- Social problems & social welfare in general
- Medicine & health
- Medical sciences
- Engineering & allied operations
- Home economics & family living
- Agriculture & related technologies
- Management & auxiliary services
- Chemical engineering
- Food & drink
- Gynecology, obstetrics, pediatrics & geriatrics
- Home & family management
- Personal health & safety
- Military & nautical engineering
- Diseases
- Animal husbandry
- Techniques, equipment & materials
- Pharmacology & therapeutics
- Orchards, fruits, & forestry
- Incidence & prevention of disease
- Applied physics
- Surgery & related medical specialties
- Leather & fur processing
- Human anatomy, cytology & histology
- Genetics & evolution
- Plant injuries, diseases & pests
- Accounting
- Printing & related activities
- Other branches of engineering
- Architecture
- Drawing & decorative arts
- Plastic arts; sculpture
- Recreational and performing arts
- Photography, photographs & computer art
- Civic & landscape art
- Music
- Galleries, museums & private collections
- Numismatics & sigillography
- Decorative arts
- Carving & carvings
- Philosophy of fine & decorative arts
- Residential & related buildings
- Historical, geographic & persons treatment
- Vocal music
- Buildings for religious purposes
- Algebra
- Animals (Zoology)
- Astronomy and allied sciences
- Physics
- Philosophy & theory
- Organic chemistry
- Education, research & related topics
- Analytical chemistry
- Chemistry & allied sciences
- Geometry
- Chronology
- Specific celestial bodies & phenomena
- Mathematics
- Plants neted for characteristics & flowers
- Biochemistry
- Historical, geographic & persons treatment
- Organizations & management
- Natural sciences & mathematics
- Techniques, equipment & materials
- Celestial navigation
- Mathematical geography
- Specific topics in natural history
- Inorganic chemistry
- Plants (Botany)
- Geology, hydrology & meteorology
- Earth sciences
- Mineralogy
- Life sciences; biology
- Arithmetic
- Physiology & related subjects
- Heat
- Afro-Asiatic literatures; Semitic literatures
- East Indo-European & Celtic literatures
- Hellenic literatures; classical Greek
- Altaic, Uralic, Hyperborean & Dravidian
- French fiction
- French drama
- American fiction in English
- German drama
- French poetry
- Italian fiction
- History, description & criticism
- Rhetoric & collections of literature
- English & Old English literatures
- German fiction
- English fiction
- Literature & rhetoric
- Philosophy & theory
- Other parts of Europe
- World history
- Middle East (Near East)
- Geography of & travel in Asia
- Eastern Europe; Russia
- Philosophy & theory
- Geography of & travel in Europe
- Egypt & Sudan
- Geography & travel
- Biography, genealogy & insignia
- Iran
- France & Monaco
- Genealogy, names & insignia
- History of Europe
- Atlases, maps, charts & plans
- Geography of & travel in Africa
- other parts of ancient world to ca. 640
- Tunisia & Libya
- Algeria
- History of ancient world to ca. 499