found: Maroto, E. S. Leyendas y tradiciones borucas, 1979 (a.e.)t.p. (Adolfo Constenla Umaña)
found: Estudios varios sobre las lenguas chibchas de Costa Rica, 1982:t.p. (Adolfo Constenla Umaña) prelim. p. iii (Dr.) p. 4 of cover (Adolfo Constenla U.)
found: nuc89-18927: His Comparative Chibchan phonology, 1981(hdg. on OrU rept.: Constenla, Adolfo; usage: Adolfo Constenla)
found: Gramática de la lengua guatusa, 1999:t.p. (Adolfo Constenla Umaña) flap (b. San José, C.R., Jan 14, 1948; PhD. in Linguistics, University of Pennsylvania)
found: Cantos guatusos de entretenimiento, 2014:title page (Adolfo Constenla Umaña) page 165 (author; born, Jan. 14, 1948 in San José [Costa Rica]; died on Nov. 7, 2013; a professor at the Escuela de Filología, Lingüística y Literatura at the Universidad de Costa Rica since 1970; doctorate in linguistics from the University of Pennsylvania in 1981)