Classification
510 - Mathematics
620 - Engineering & allied operations
5
519 - Probabilities & applied mathematics
4
005 - Computer programming, programs & data
3
384 - Communications; telecommunication
3
500 - Natural sciences & mathematics
3
530 - Physics
3
331 - Labor economics
2
374 - Adult education
1
515 - Analysis
1
535 - Light & infrared & ultraviolet phenomena
1
681 - Precision instruments & other devices
1