 |
| |||
| 層別抽出 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
stratified sampling : 3 צירופים, 1 נושאים |
| כללי | 3 |
|
| |||
| 層別抽出 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
|
stratified sampling : 3 צירופים, 1 נושאים |
| כללי | 3 |