'50s

50s 50's English Noun p en 50s. en 2013-05-13 Judith Shulevitz The Lethality of Loneliness w:The New Republic https://newrepublic.com/article/113176/science-loneliness-how-isolation-can-kill-you Suomi is building on research begun by his teacher and mentor, Harry Harlow, a psychologist at the University of Wisconsin notorious for experiments in the ’50s and ’60s. https://web.archive.org/web/20150331222002/https://newrepublic.com/article/113176/science-loneliness-how-isolation-can-kill-you See also en Decades