publisher: Codesria
publish date: January 1st 1993
format: paperback pages: 512
language: English
ISBN:
2869780273 (9782869780279)
publisher: Codesria
language: English
ISBN:
2869780265 (9782869780262)
publisher: East African Educational Publishers publish date: January 28th 1997
format: paperback pages: 501
language: English
ISBN:
996646025X (9789966460257)