by Ir. Setijo Pitojo $6.00
by $7.00
by L. Prasetya, Pr. $4.00
by Ernest & Sri Mariyanto $4.00
by Dr. Alex I. Suwandi, Pr. $4.00
by Rondang Pasaribu $6.00
by JH. Rapar $11.00
by Thabrani $12.00
by H.A. Aziz Salim Basyarahil $7.00
by - $9.00