TY  - RPRT
TI  - Evaluation of a prepared childbirth program.
AU  - J Halstead
AU  - T Fredrickson
DO  - 10.1111/j.1552-6909.1978.tb00744.x
UR  - https://pubmed.ncbi.nlm.nih.gov/251741/
ID  - 251741
ER  -