February 1999
March 1999
- Nigeria Government Gazette dated 1999-03-23 number 17 (3.5Â MB, PDF)
- Nigeria Government Gazette dated 1999-03-24 number 18 (455.2Â KB, PDF)
September 1999
- Nigeria Government Gazette dated 1999-09-10 number 63 (409.3Â KB, PDF)