Tests of use of post office resources to improve coverage of censuses.
| Erakunde egilea: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
[Washington
s.n.
1965].
|
| Saila: | Its Working paper
no. 19 |
| Gaiak: |