Essential Grammar in Usea self-study reference and practice book for elementary learners of English: with answers and eBookde Raymond MurphyMateriasProblems, exercisesGrammarLanguage arts (Elementary)Textbooks for foreign speakersForeign speakersEnglish languageStudy and teaching (Elementary)Ediciones Más obras de Raymond MurphyBBasic grammar in useBasic grammar in use1993Essential grammar in use1993Basic grammar in use = Hanʼgugŏ-pʻan2005