Classification
340 - Law
400 - Language
410 - Linguistics
700 - The arts; fine & decorative arts
900 - History & geography
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
1
370 - Education
1
380 - Commerce, communications & transportation
1
491 - East Indo-European & Celtic languages
1
580 - Plants (Botany)
1
600 - Technology
1
658 - General management
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1