Classification
000 - Computer science, information & general works
256
001 - Knowledge
56
003 - Systems
17
004 - Data processing & computer science
233
005 - Computer programming, programs & data
475
006 - Special computer methods
424
010 - Bibliography
6
011 - Bibliographies
13
020 - Library & information sciences
7
025 - Library operations
22
026 - Libraries for specific subjects
1
027 - General libraries
1
028 - Reading & use of other information media
1
030 - General encyclopedic works
3
069 - Museum science
1
070 - News media, journalism & publishing
36
071 - Newspapers in North America
1
079 - Newspapers in other geographic areas
1
085 - Collections in Italian, Romanian & related languages
1
100 - Philosophy & psychology
672
107 - Education, research & related topics
2
109 - Historical & collected persons treatment
32
110 - Metaphysics
26
111 - Ontology
32
113 - Cosmology
13
115 - Time
1
120 - Epistemology, causation & humankind
86
121 - Epistemology
19
122 - Causation
1
123 - Determinism & indeterminism
7
126 - The self
17
128 - Humankind
43
130 - Parapsychology & occultism
9
133 - Specific topics in parapsychology & occultism
1
140 - Specific philosophical schools
329
141 - Idealism & related systems
2
142 - Critical philosophy
79
144 - Humanism & related systems
1
146 - Naturalism & related systems
6
149 - Other philosophical systems
4
150 - Psychology
106
152 - Perception, movement, emotions & drives
7
153 - Mental processes & intelligence
42
155 - Differential & developmental psychology
72
158 - Applied psychology
149
160 - Logic
27
170 - Ethics
2,514
171 - Ethical systems
58
172 - Political ethics
48
173 - Ethics of family relationships
3
more ...