by FAO $6.00
by Ir. H. Rahmat Rukmana, MBA., M.Sc. & Uu Sugandi Saputra, B.Sc $6.00
by Kemas Ali Hanafiah $9.00
by Bagus Takwin $7.00
by Ir. Dudung Abdul Muslim $9.00
by RT. Sutantya R.H $7.00
by Drs. Abdul Chaer $7.00