TY  - RPRT
TI  - [Proceedings: A new obstetrical medical record for documentation and data processing].
AU  - M Hamacher
AU  - N Lang
PY  - 1973
DO  - 10.1007/bf00671218
UR  - https://pubmed.ncbi.nlm.nih.gov/4801519/
ID  - 4801519
ER  -