Ariful Hasan-Opu, Editor, doctorsbd.com, editor@doctorsbd.com, Member: BCS, BIJF, BES, NMST
Prothom Alo/
1.
Ten in one circuite, Date: 6 october 2002
2.
Autometic Tubewel Date: 19 January 2003
3.
Fire sicuerity System, Date: 8 June 2003
Fire sicuerity System, Date: 8 June 2003