TY  - RPRT
TI  - Observations on breech presentation and delivery.
AU  - D HAY
PY  - 1959
DO  - 10.1111/j.1471-0528.1959.tb02095.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14400280/
ID  - 14400280
ER  -