by H. Rahmat Rukmana $5.00
by Windyatmoko B, MSF $8.00
by H. R. Kartadisastra $6.00
by Bambang Agus Murtidjo $6.00
by Dellmann, H. Dieter $9.00
by Ir. Rindit Pembayun, M.P. $6.00