Interference caused by first language on the pronunciation of english voiced / voiceless fricative and affricate consonant sounds /d/, /θ/, /tʃ/, and / ʃ /: a literature review work supported with some field data collected among students of the b.a. in english emphasis on teaching of the Foreign Languages Department of the University of El Salvador, Semester II – 2011 /
por: López Rivas, María Roxana