TY  - RPRT
TI  - Handling problems of ecological fallacy in program planning and evaluation.
AU  - B I Milcarek
AU  - B G Link
PY  - 1981
DO  - 10.1016/0149-7189(81)90050-1
UR  - https://pubmed.ncbi.nlm.nih.gov/10252691/
ID  - 10252691
ER  -