True colors 4 : an EFL course for real communication. - Maurer, Jay; Schoenberg, Irene E. 1946- (New York, New York : Longman, 1999)
La biblioteca contiene: Teacher's edition / Wendy J. Allison; Teacher's bonus pack / Jay Maurer, Irene E. Schoenberg; Workbook by Angela Blackwell
Keywords: INGLES; TEXTOS PARA EXTRANJEROS; ESTUDIO Y ENSEÑANZA