publisher: Oxford University Press publish date: August 16th 1990
format: hardcover pages: 208
language: English
ISBN:
0198544944 (9780198544944)
publisher: Nelson Thornes
publish date: October 21st 1993
format: paperback pages: 283
language: English
ISBN:
0412488809 (9780412488801)
publisher: Routledge publish date: December 22nd 1999
format: paperback pages: 288
language: English
ISBN:
0415198429 (9780415198424)
publisher: Open University, 94 pages, " /> publish date: December 1st 2003
pages: 94
ISBN:
0749256656 (9780749256654)