Thornton, William E. (William Edgar), 1929-2016-03-312016-03-311972http://hdl.handle.net/2152.3/625Graph depicting the height and body circumference changes during the SMEAT SL-4 test for "SPT" (Simulation Support, Dr. William Thornton).Skylab Program.Space medicine.Space flight--Physiological effect.Weightlessness--Physiological effect.Image