Classification
700 - The arts; fine & decorative arts
4
005 - Computer programming, programs & data
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
900 - History & geography
3
140 - Specific philosophical schools
2
300 - Social sciences
2
320 - Political science
2
330 - Economics
2
331 - Labor economics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
791 - Public performances
2
006 - Special computer methods
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
305 - Social groups
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
370 - Education
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1
612 - Human physiology
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
620 - Engineering & allied operations
1
629 - Other branches of engineering
1
658 - General management
1
709 - Historical, geographic & persons treatment
1
809 - History, description & criticism
1
813 - American fiction in English
1
994 - Australia
1