Comparison of progesterone preparations in secondary amenorrhea.
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Amenorrhea↗
Biomedical subjects
R FRANK
Publications and source records attributed to R FRANK.
Clinical evaluation of a simple jelly-alone method of contraception.
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Contraception↗
[Electron microscopy and diffraction in posttraumatic osteoporosis].
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Microscopy, Electron↗
[Decalcification by acids as possible primary cause of dental caries].
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Acids↗
[Contribution to the study of dental caries].
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Dental Caries↗