American English in 20 lessons
Subtitle: intended for self-study and for use in schools
By: by Manuel Durán and Robert M. Willis.
Contributors: Willis, Robert M., joint author.
Edition: 1st ed.
Series: Cortina method
Publisher: R.D. Cortina Co.
Published: 1966
Place of publication: New York
Language: eng
Number of pages: 236
Subjects: English language -- Textbooks for foreign speakers.
Notes: "Based on the method of R. Diez de la Cortina."