620 - Engineering & allied operations 5,232
621 - Applied physics 739
629 - Other branches of engineering 521
623 - Military & nautical engineering 148
624 - Civil engineering 144
628 - Sanitary & municipal engineering 85
625 - Engineering of railroads & roads 46
627 - Hydraulic engineering 41
622 - Mining & related operations 30
600 - Technology 4
626 - [Unassigned] 2
070 - News media, journalism & publishing 1
330 - Economics 1
340 - Law 1
360 - Social problems & services; associations 1
780 - Music 1