Classification
384 - Communications; telecommunication
005 - Computer programming, programs & data
2
302 - Social interaction
2
331 - Labor economics
2
500 - Natural sciences & mathematics
2
000 - Computer science, information & general works
1
004 - Data processing & computer science
1
006 - Special computer methods
1
300 - Social sciences
1
330 - Economics
1
380 - Commerce, communications & transportation
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
745 - Decorative arts
1