De Ossanna, Norma B. D. La lengua oral Norma B. D. De Ossanna. - Buenos Aires Editorial Kapelusz 1977. - 63 p. - Cuaderno pedagogico . Includes index. Bibliography : p. 61-63. ISBN: 9501367282 Subjects--Topical Terms: LinguisticsLanguage and languages LC Class. No.: LB1577 / .S7 1977