TY  - RPRT
TI  - Oestriol concentration in amniotic fluid.
AU  - E A Michie
AU  - J R Livingstone
PY  - 1969
DO  - 10.1530/acta.0.0610329
UR  - https://pubmed.ncbi.nlm.nih.gov/5819749/
ID  - 5819749
ER  -