Classification
330 - Economics
3
340 - Law
600 - Technology
3
333 - Economics of land & energy
2
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1