| Original language | Undefined/Unknown |
|---|---|
| Place of Publication | Helsinki |
| Edition | 1 |
| Publication status | Published - 1999 |
| Publication type | D4 Published development or research report or study |
Publication series
| Name | Tilastokeskus tutkimuksia |
|---|---|
| No. | 227 |
| ISSN (Print) | 0355-2071 |