2018-09-182018-09-18Unknownhttps://hdl.handle.net/2152.3/10110A graph of Blood Urea levels Postflight and Preflight of 35 USSR cosmonauts.Dr. William ThorntonUSSRSoyuzcosmonautsgraphBlood UreaSpace MedicineUSSR_Graph_Blood_Urea_Cosmonauts_Postflight_Preflight