 |
| |||
| error of observation; ascertainment error; observational error | |||
| observation error | |||
|
error de observacion : 3 短语, 2 学科 |
| 统计数据 | 1 |
| 通讯 | 2 |
|
| |||
| error of observation; ascertainment error; observational error | |||
| observation error | |||
|
error de observacion : 3 短语, 2 学科 |
| 统计数据 | 1 |
| 通讯 | 2 |