TY  - RPRT
TI  - Letter: Migration and mental subnormality.
AU  - L Wallin
PY  - 1974
DO  - 10.1016/s0140-6736(74)90715-6
UR  - https://pubmed.ncbi.nlm.nih.gov/4134322/
ID  - 4134322
ER  -