found: Dai sotterranei alla storia, 1971.
found: LC data base, 7/12/89(hdg.: Betto, Frei, 1944- ; usage: Frei Betto; Carlos Alberto Libanio Christo; Carlos Alberto Libanio Cristo)
found: nuc88-99885: His Lo que son las comunidades eclesiales ... 1981(hdg. on NjPT rept.: Betto, Frei, 1944- ; usage: Frei Beto (Carlos Alberto Libanio C.))
found: NUC, Sept. 11, 1997(Betto, Frei, 1944- )
found: Aquário negro, 2009:t.p. (Frei Betto) inside back cover (author and Dominican friar; studied journalism, anthropology, philosophy and theology)
found: El cristiano y el budista, 2019:t.p. (Frei Betto) p. 99 (Carlos Alberto Libânio Christo; born August 25, 1944, Belo Horizonte, Minas Gerais, Brazil; liberation theologian, writer, journalist and lecturer)