| Answer | Crossword Clue |
|---|---|
| SYST | Method of classification: Abbr. |
| ORD | Classification: Abbr. |
| LTD | R.R. classification: Abbr. |
| SCI | The 500s, in the Dewey Decimal Classification: Abbr. |
| SPS | Method of delivery: Abbr. |
| SYST | Method of order: Abbr. |
| RAD | Method of communication: Abbr. |
| PROC | Method of doing something: Abbr. |
| IMP | Method of scoring in tournament bridge: abbr. |
