by Enceng Surachman & Widodo Agus S. $6.00
by Ir. Nur Tjahjadi $5.00
by Program Nasional PHT $7.00
by Sutanto $5.00
by T. Sarpian $7.00
by Ir. Budi Samadi $6.00
by Rahardjo, M. Dawan $7.00