found: Christology at the crossroads : a Latin American approach, 1978:title page (Jon Sobrino, S.J.)
found: Romero, Óscar A. La voz de los sin voz, 1980:title page (J. Sobrino)
found: Mons. Romero, verdadero profeta, 1982:title page (Jon Sobrino) cover (Basque Jesuit, born 1938)
found: Wikipedia, viewed November 2, 2018(Jon Sobrino; Jesuit Catholic priest and theologian, known mostly for his contributions to liberation theology; born December 27, 1938, into a Basque family in Barcelona, Spain; entered the Society of Jesus in 1957; in 1958, he was sent to El Salvador; he taught at the Jesuit-run University of Central America (UCA) in San Salvador)