TY  - RPRT
TI  - [The problem of active control during labor].
AU  - L A Kozlov
AU  - Banshchik Fya
AU  - K B Voronin
AU  - N L Banshchik
PY  - 1975
UR  - https://pubmed.ncbi.nlm.nih.gov/12259333/
ID  - 12259333
ER  -