. . . . "A History of adult education at Columbia University" . . "A History of Adult Education at Columbia University. University Extension and the School of General Studies"@en . . . . . . . "A history of adult education at Columbia University; University Extension and the School of General Studies" . . . . . . "History" . . "A history of adult education at Columbia University : University Extension and the School of General Studies" . . "A history of adult education at Columbia University University Extension and the School of General Studies"@en . . "A history of adult education at Colombia University : University Extension and the School of General Studies"@en . . . . . . . . . . . . .