TY  - RPRT
TI  - Simple distance-measuring and centering device for x-ray therapy machine.
AU  - W SNYDER
PY  - 1954
DO  - 10.1001/archderm.1954.01540150120016
UR  - https://pubmed.ncbi.nlm.nih.gov/13137613/
ID  - 13137613
ER  -