A third active principle in ergot extracts : (preliminary note) / by George Barger and Henry Hallett Dale.
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A third active principle in ergot extracts : (preliminary note) / by George Barger and Henry Hallett Dale. Credit: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.. Attribution 4.0 International (CC BY 4.0)