Text ( visual ) : unmediated Teach English : a training course for teachers : teacher's workbook / Adrian Doff. -- cassette. -- Cambridge [Cambridgeshire] ; New York : Cambridge University Press , 1988. -- iv, 139 p. ; 25 cm. -- ISBN 0521348633 ; 0521343909 ; (BA03974711) ; https://ci.nii.ac.jp/ncid/BA03974711 Author Heading(s): Doff, Adrian. -- Classification(s): LCC : PE1128.A2 ; DC19 : 428/.007/1. -- Subject Heading(s): LCSH : English language -- Study and teaching -- Foreign speakers