TY  - RPRT
TI  - Amish demography.
AU  - H E Cross
AU  - V A McKusick
PY  - 1970
DO  - 10.1080/19485565.1970.9987850
UR  - https://pubmed.ncbi.nlm.nih.gov/5538247/
ID  - 5538247
ER  -