00680nam a2200229   450000100060000000300030000600500170000900800410002602000150006703500190008203500180010104000160011904100080013505000230014310000220016624500800018826000480026830000170031650000190033365000630035265000350041525133UR20220427180329.0061103|||||||||||||||||||||||||||||||| d  a0521467446  a(janium) 25122  a(janium)25120  aURCABCbspa0 aspa 4aPE1128b.R456 19941 aRichards, Jack C.10aInterchange  b english for international comunication  /cJack C. Richards  aUSA  bCambridge University press , c1994.  a107p.  bil.  aStudent's book14aComunicaciónxInternacionalxProblemas, ejercicios, etc.14aInglesxTexto para extranjeros