Open doors : student's book 1A /
Whitney, Norman
Open doors : student's book 1A / Open doors : student's book 1B Norman Whitney - Oxford : Oxford University Press, c1995 - 2 v. : col. ill. ; 30 cm.
0194356280 (v.1) 978019435628 (v.1) 0194356299 (v.2) 978 0194356299 (v.2)
English language--Textbooks for second language learners
English language--Textbooks for foreign speakers
Open doors : student's book 1A / Open doors : student's book 1B Norman Whitney - Oxford : Oxford University Press, c1995 - 2 v. : col. ill. ; 30 cm.
0194356280 (v.1) 978019435628 (v.1) 0194356299 (v.2) 978 0194356299 (v.2)
English language--Textbooks for second language learners
English language--Textbooks for foreign speakers