TY  - RPRT
TI  - [A proposal concerning information and research guidelines, with reference to internal migration. A preliminary discussion about the 1980 census].
AU  - J L Madeira
AU  - M G Castro
PY  - 1978
UR  - https://pubmed.ncbi.nlm.nih.gov/12311385/
ID  - 12311385
ER  -