by Harry Simons $12.00
by Ir. Sarjoni Basri $9.00
by Jatna Supriatna $40.00
by Panut Djojosumarto $9.00
by Drs. H. Basri Iba Asghary $11.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $6.00