O'Connell, Susan.
Focus on proficiency / Sue O'Connell. - Rev. and enl. ed. - London : Collins ELT, 1989. - 224 p. : ill. ; 27 cm
Previous ed.: 1984.
0003702685 (pbk. : Student's book) 9780003702682 (pbk. : Student's book)
English language--Examinations--Study guides.
English language--Textbooks for foreign speakers.
428.2 / OCO
Focus on proficiency / Sue O'Connell. - Rev. and enl. ed. - London : Collins ELT, 1989. - 224 p. : ill. ; 27 cm
Previous ed.: 1984.
0003702685 (pbk. : Student's book) 9780003702682 (pbk. : Student's book)
English language--Examinations--Study guides.
English language--Textbooks for foreign speakers.
428.2 / OCO