Classification
333 - Economics of land & energy
2
410 - Linguistics
551 - Geology, hydrology & meteorology
610 - Medicine & health
2
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
1
170 - Ethics
1
304 - Factors affecting social behavior
1
370 - Education
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1