Conversational Spanish in 20 Lessons (Cortina method) - Paperback - VERY GOOD

Conversational Spanish in 20 Lessons (Cortina method) - Paperback - ACCEPTABLE

Conversational Spanish in 20 Lessons

Mtodo Cortina: ingls en 20 lecciones - Paperback - GOOD

Conversational French in 20 Lessons (Cortina Method) - Paperback - GOOD

Conversational Spanish in 20 Lessons by R. Diez De La Cortina

Conversational German: In 20 Lessons (Cortina Method) by Eva C. Lange