by Ernest Mariyanto $4.00
by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $7.00
by Betty Sri Laksmi & Winiati Pudji Rahayu $7.00
by $4.00
by Ir. Mul Muyani Sutedjo $7.00
by Dr. Budi Tri Akoso $11.00