ARTICLE: PDF OnlyViscosity and Specific Gravity of Urine Menstrual-cycle variationsLARKS, S. D. B.S.E.E., M.S. Author Information From the Department of Biophysics, School of Medicine, University of California at Los Angeles, Los Angeles, Calif. Obstetrics & Gynecology 5(3):p 352-355, March 1955. Buy © 1955 The American College of Obstetricians and Gynecologists