| System abbr. | |
| gen. | system |
| busin. | framework |
| comp. | system software |
| earth.sc. mech.eng. | system |
| IMF. | scheme |
| refrig. | system; thermodynamic system |
| social.sc. | drug addiction |
| tech. | method; plan |
|
Dewey : 3 phrases in 2 subjects |
| General | 2 |
| Information technology | 1 |