by Ir. Arifin Arief, M. P $5.00
by Ir. Dedy Heryadi Sutisna, MS & Ratno Sutarmanto $6.00
by Bole Malo, Agustinus $5.00
by Tim Pustaka Familia $6.00
by N. Edy Soetanto, BE. $5.00
by Yudhis M.Burhanuddin $10.00