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Dewey Decimal Classification (DDC) : 110

First Summary (The Ten Main Classes)

000 : Computers, information, & general works
100 : Philosophy & psychology
200 : Religion
300 : Social sciences
400 : Language
500 : Science
600 : Technology
700 : Arts & recreation
800 : Literature
900 : History & geography

Second Summary (The Hundred Divisions)

100 : Philosophy
110 : Metaphysics
120 : Epistemology
130 : Parapsychology & occultism
140 : Philosophical schools of thought
150 : Psychology
160 : Logic
170 : Ethics
180 : Ancient, medieval & Eastern philosophy
190 : Modern western philosophy


Third Summary (The Thousand Sections)

110 : Metaphysics
111 : Ontology
112 : [Unassigned]
113 : Cosmology
114 : Space
115 : Time
116 : Change
117 : Structure
118 : Force & energy
119 : Number & quantity