publisher: Routledge publish date: April 5th 1994
format: paperback pages: 312
language: English
ISBN:
058221288X (9780582212886)
publisher: Longman Publishing Group
format: hardcover pages: 234
language: English
ISBN:
0582655250 (9780582655256)
publisher: Longman Publishing Group publish date: November 28th 1989
format: paperback pages: 304
language: English
ISBN:
0582019001 (9780582019003)