| Systems |
003 |
英文 |
| Statistics |
310 |
英文 |
| Economics |
330 |
英文 |
| Land economics |
333 |
英文 |
| Production |
338 |
英文 |
| Social law |
344 |
英文 |
| Education |
370 |
英文 |
| Generalities of education |
371 |
英文 |
| Other systems of communication |
384 |
英文 |
| Pure sciences |
500 |
英文 |
| Mathematics |
510 |
英文 |
| Analysis |
515 |
英文 |
| Probabilities & applied mathematics |
519 |
英文 |
| Sciences of earth & other worlds |
550 |
英文 |
| Geology, meteorology, hydrology |
551 |
英文 |
| Economic geology |
553 |
英文 |
| Biology |
574 |
英文 |
| Microbes |
576 |
英文 |
| General nature of life |
577 |
英文 |
| Engineering & allied operations |
620 |
英文 |
| Applied physics |
621 |
英文 |
| Sanitary & municipal engineering |
628 |
英文 |
| Other branches of engineering |
629 |
英文 |
| Management & auxiliary services |
650 |
英文 |
| Office services |
651 |
英文 |
| Written communication processes |
652 |
英文 |
| Accounting |
657 |
英文 |
| Advertising & public relations |
659 |
英文 |
| Chemical & related technologies |
660 |
英文 |
| Indoor games & amusements |
793 |
英文 |
