1. Synthesis of placental lactogen by human placentae;Chard,1981
2. Placental Function Tests;Chard,1982
3. Oestrogen metabolism in pregnancy;Diczfalusy,1969
4. The specific proteins of the human placenta: some new hypotheses;Gordon,1979
5. Criteria for the selection of steroid assays in the assessment of fetoplacental function;Klopper,1979