by Warisno $6.00
by Tim Pustaka Familia $11.00
by Ir. Dedy Heryadi Sutisna, MS & Ratno Sutarmanto $6.00
by Ir. Heinz Frick & FX. Bambang Suskiyatno $6.00
by Budi Tri Akoso $0.00
by Ir. Bambang Cahyono $5.00