Classification
000 - Computer science, information & general works
23
001 - Knowledge
23
004 - Data processing & computer science
7
005 - Computer programming, programs & data
6
006 - Special computer methods
7
011 - Bibliographies
3
023 - Personnel management
1
025 - Library operations
1
150 - Psychology
7
153 - Mental processes & intelligence
66
155 - Differential & developmental psychology
2
158 - Applied psychology
76
170 - Ethics
6
174 - Occupational ethics
1
253 - Pastoral office & work
1
300 - Social sciences
302 - Social interaction
519
303 - Social processes
7
304 - Factors affecting social behavior
5
330 - Economics
615
331 - Labor economics
185
332 - Financial economics
41
333 - Economics of land & energy
1
337 - International economics
1
338 - Production
339 - Macroeconomics & related topics
1
351 - Public administration
1
352 - General considerations of public administration
5
355 - Military science
1
362 - Social welfare problems & services
7
364 - Criminology
2
368 - Insurance
9
371 - Schools & their activities; special education
1
374 - Adult education
1
380 - Commerce, communications & transportation
22
381 - Commerce
60
384 - Communications; telecommunication
61
500 - Natural sciences & mathematics
292
510 - Mathematics
3
519 - Probabilities & applied mathematics
1
600 - Technology
2
610 - Medicine & health
2
620 - Engineering & allied operations
29
629 - Other branches of engineering
2
650 - Management & auxiliary services
102
651 - Office services
1
658 - General management
813
659 - Advertising & public relations
3
670 - Manufacturing
291
745 - Decorative arts
13
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