by Ir. Bambang Cahyono $7.00
by Haryoto $5.00
by Bangun Triharyanto $7.00
by Ir. H. Rahmat Rukmana, MBA., M.Sc. & Uu Sugandi Saputra, B.Sc $6.00
by E. Martasudjita, Pr. $3.00
by P. Patrisius Pa, SVD $3.00