Classification
330 - Economics
610 - Medicine & health
5
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
1
300 - Social sciences
1
306 - Culture & institutions
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
370 - Education
1
600 - Technology
1
616 - Diseases
1