TY  - RPRT
TI  - Initial experience with a prepared childbirth program.
AU  - R E Howard
AU  - Jan Marie Sister
DO  - 10.1111/j.1552-6909.1972.tb00550.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4484758/
ID  - 4484758
ER  -