Thornton, William E. (William Edgar), 1929-2016-03-312016-03-311972http://hdl.handle.net/2152.3/624Graph depicting the height and body circumference changes during the SMEAT SL-4 test for "PLT" (Simulation Pilot, Bo Bobko).Weightlessness--Physiological effect.Space flight--Physiological effect.Skylab Program.Space medicine.Image