TY  - RPRT
TI  - [A punched-card system as a documentation method in obstetrics].
AU  - U Glaser
AU  - I Diehl
AU  - H Stegmann
PY  - 1965
UR  - https://pubmed.ncbi.nlm.nih.gov/5876782/
ID  - 5876782
ER  -