| Call Number | Subject |
|---|---|
| DA | Great Britain |
| DAW | Central Europe |
| DB | Austria - Liechtenstein - Hungary - Czechoslovakia |
| DC | France - Andorra - Monaco |
| DD | Germany |
| DE | Greco-Roman World |
| DF | Greece |
| DG | Italy - Malta |
| DH | Low Countries - Benelux Countries |
| DJ | Netherlands (Holland) |
| DJK | Eastern Europe (General) |
| DK | Russia. Soviet Union. Former Soviet Republics - Poland |
| DL | Northern Europe. Scandinavia |
| DP | Spain - Portugal |
| DQ | Switzerland |
| DR | Balkan Peninsula |
| DS | Asia |
| DT | Africa |
| DU | Oceania (South Seas) |
| DX | Romanies |