Focus on grammar [sound recording] : a high-intermediate course for reference and practice /
Fuchs, Marjorie,1949-
Bonner, Margaret.
[White Plains, N.Y.?] : Addison Wesley Longman,
c2000.
Cassette 1, side 1, units 1-5 -- Cassette 1, side 2, units 6-10 -- Cassette 2, side 1, units 11-15 -- Cassette 2, side 2, units 16-20 -- Cassette 3, side 1, units 20-25 -- Cassette 3, side 2, units, 26-29, appendix 23.