J. Donald Bowen - Böcker

This series is designed to provide a detailed account of one of the major problems in the teaching of a second language—the interference caused by structural differences between the native language of the learner and the foreign language he is studying. The similarities and differences between English and the language being taught are described in two volumes, one on the sound systems and one on the grammatical systems, for some of the foreign languages most in demand in the United States today.