by L. Prasetya, Pr. $4.00
by Drs. Aloysius Soenarto & Stanislaus Suliangto $4.00
by Wahyu Qamara Mugnisjah & Asep Setiawan $7.00
by Ir. Ari Wijayani Purwanto $11.00
by E. Martasudjita, Pr. $3.00
by Bambang Agus Murtidjo $6.00